diff --git a/web/src/api/queries.ts b/web/src/api/queries.ts
index b777b8a..a23651c 100644
--- a/web/src/api/queries.ts
+++ b/web/src/api/queries.ts
@@ -200,6 +200,87 @@ export function useDeleteObject() {
   });
 }
 
+type NewVocabularyRequest = components["schemas"]["NewVocabularyRequest"];
+type LabelInput = components["schemas"]["LabelInput"];
+
+export function useVocabularies() {
+  return useQuery({
+    queryKey: ["vocabularies"],
+    queryFn: async () => {
+      const { data, error } = await api.GET("/api/admin/vocabularies");
+
+      if (error || !data) throw new Error("failed to load vocabularies");
+
+      return data;
+    },
+    staleTime: 5 * 60 * 1000,
+  });
+}
+
+export function useCreateVocabulary() {
+  const qc = useQueryClient();
+
+  return useMutation({
+    mutationFn: async (body: NewVocabularyRequest) => {
+      const { data, error } = await api.POST("/api/admin/vocabularies", { body });
+
+      if (error || !data) throw new Error("create vocabulary failed");
+
+      return data;
+    },
+    onSuccess: () => qc.invalidateQueries({ queryKey: ["vocabularies"] }),
+  });
+}
+
+export function useAddTerm() {
+  const qc = useQueryClient();
+
+  return useMutation({
+    mutationFn: async ({
+      vocabularyId,
+      external_uri,
+      labels,
+    }: {
+      vocabularyId: string;
+      external_uri: string | null;
+      labels: LabelInput[];
+    }) => {
+      const { response } = await api.POST("/api/admin/vocabularies/{id}/terms", {
+        params: { path: { id: vocabularyId } },
+        body: { external_uri, labels },
+      });
+
+      if (response.status !== 201) throw new Error("add term failed");
+    },
+    onSuccess: (_result, { vocabularyId }) =>
+      qc.invalidateQueries({ queryKey: ["terms", vocabularyId] }),
+  });
+}
+
+export function useCreateAuthority() {
+  const qc = useQueryClient();
+
+  return useMutation({
+    mutationFn: async ({
+      kind,
+      external_uri,
+      labels,
+    }: {
+      kind: string;
+      external_uri: string | null;
+      labels: LabelInput[];
+    }) => {
+      const { response } = await api.POST("/api/admin/authorities", {
+        body: { kind, external_uri, labels },
+      });
+
+      if (response.status !== 201) throw new Error("create authority failed");
+    },
+    onSuccess: (_result, { kind }) =>
+      qc.invalidateQueries({ queryKey: ["authorities", kind] }),
+  });
+}
+
 type Visibility = "draft" | "internal" | "public";
 
 /** Error carrying the HTTP status so callers can branch 422-gate vs 409-illegal. */
diff --git a/web/src/api/queries.vocab.test.tsx b/web/src/api/queries.vocab.test.tsx
new file mode 100644
index 0000000..3d7299b
--- /dev/null
+++ b/web/src/api/queries.vocab.test.tsx
@@ -0,0 +1,50 @@
+import { describe, expect, test } from "vitest";
+import { renderHook, waitFor } from "@testing-library/react";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { http, HttpResponse } from "msw";
+import type { ReactNode } from "react";
+import { server } from "../test/server";
+import { useVocabularies, useCreateVocabulary, useAddTerm, useCreateAuthority } from "./queries";
+
+function wrapper({ children }: { children: ReactNode }) {
+  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
+  return <QueryClientProvider client={qc}>{children}</QueryClientProvider>;
+}
+
+describe("vocab/authority hooks", () => {
+  test("useVocabularies lists vocabularies", async () => {
+    const { result } = renderHook(() => useVocabularies(), { wrapper });
+    await waitFor(() => expect(result.current.data?.length).toBe(2));
+    expect(result.current.data?.[0].key).toBe("material");
+  });
+  test("useCreateVocabulary POSTs the key", async () => {
+    let body: unknown;
+    server.use(http.post("/api/admin/vocabularies", async ({ request }) => {
+      body = await request.json();
+      return HttpResponse.json({ id: "v-x", key: "colour" }, { status: 201 });
+    }));
+    const { result } = renderHook(() => useCreateVocabulary(), { wrapper });
+    await result.current.mutateAsync({ key: "colour" });
+    expect((body as { key: string }).key).toBe("colour");
+  });
+  test("useAddTerm POSTs labels to the vocabulary", async () => {
+    let body: unknown;
+    server.use(http.post("/api/admin/vocabularies/:id/terms", async ({ request }) => {
+      body = await request.json();
+      return HttpResponse.json({ id: "t-x" }, { status: 201 });
+    }));
+    const { result } = renderHook(() => useAddTerm(), { wrapper });
+    await result.current.mutateAsync({ vocabularyId: "v-material", external_uri: null, labels: [{ lang: "en", label: "Red" }] });
+    expect((body as { labels: { label: string }[] }).labels[0].label).toBe("Red");
+  });
+  test("useCreateAuthority POSTs kind + labels", async () => {
+    let body: unknown;
+    server.use(http.post("/api/admin/authorities", async ({ request }) => {
+      body = await request.json();
+      return HttpResponse.json({ id: "a-x" }, { status: 201 });
+    }));
+    const { result } = renderHook(() => useCreateAuthority(), { wrapper });
+    await result.current.mutateAsync({ kind: "person", external_uri: null, labels: [{ lang: "en", label: "Ada" }] });
+    expect((body as { kind: string }).kind).toBe("person");
+  });
+});
diff --git a/web/src/app.tsx b/web/src/app.tsx
index 5508f09..e882e83 100644
--- a/web/src/app.tsx
+++ b/web/src/app.tsx
@@ -7,6 +7,10 @@ import { AppShell } from "./shell/app-shell";
 import { ObjectsPage } from "./objects/objects-page";
 import { ObjectDetail } from "./objects/object-detail";
 import { SelectPrompt } from "./objects/select-prompt";
+import { VocabulariesPage } from "./vocab/vocabularies-page";
+import { VocabularyTerms } from "./vocab/vocabulary-terms";
+import { SelectVocabularyPrompt } from "./vocab/select-vocabulary-prompt";
+import { AuthoritiesPage } from "./authorities/authorities-page";
 
 const ObjectNewPage = lazy(() =>
   import("./objects/object-new-page").then((m) => ({ default: m.ObjectNewPage })),
@@ -47,6 +51,12 @@ export function App() {
                 }
               />
             </Route>
+            <Route path="/vocabularies" element={<VocabulariesPage />}>
+              <Route index element={<SelectVocabularyPrompt />} />
+              <Route path=":id" element={<VocabularyTerms />} />
+            </Route>
+            <Route path="/authorities" element={<Navigate to="/authorities/person" replace />} />
+            <Route path="/authorities/:kind" element={<AuthoritiesPage />} />
             <Route path="/" element={<Navigate to="/objects" replace />} />
           </Route>
         </Route>
diff --git a/web/src/authorities/authorities-page.tsx b/web/src/authorities/authorities-page.tsx
new file mode 100644
index 0000000..06d03f2
--- /dev/null
+++ b/web/src/authorities/authorities-page.tsx
@@ -0,0 +1,97 @@
+import { useState, type FormEvent } from "react";
+import { NavLink, Navigate, useParams } from "react-router-dom";
+import { useTranslation } from "react-i18next";
+
+import type { components } from "../api/schema";
+import { useAuthorities, useCreateAuthority } from "../api/queries";
+import { LabelEditor } from "../components/label-editor";
+import { Button } from "@/components/ui/button";
+import { labelText } from "../lib/labels";
+
+type LabelInput = components["schemas"]["LabelInput"];
+
+const KINDS = ["person", "organisation", "place"] as const;
+
+export function AuthoritiesPage() {
+  const { t, i18n } = useTranslation();
+  const { kind } = useParams();
+  const lang = i18n.language.startsWith("sv") ? "sv" : "en";
+
+  const isValidKind = (KINDS as readonly string[]).includes(kind ?? "");
+
+  const { data: authorities } = useAuthorities(isValidKind ? (kind as string) : "person");
+  const create = useCreateAuthority();
+
+  const [labels, setLabels] = useState<LabelInput[]>([]);
+  const [error, setError] = useState(false);
+
+  if (!isValidKind) return <Navigate to="/authorities/person" replace />;
+
+  const onCreate = (event: FormEvent) => {
+    event.preventDefault();
+
+    if (!labels.some((l) => l.lang === "en" && l.label)) {
+      setError(true);
+      return;
+    }
+
+    setError(false);
+    create.mutate(
+      { kind: kind as string, external_uri: null, labels },
+      { onSuccess: () => setLabels([]) },
+    );
+  };
+
+  return (
+    <div className="overflow-auto p-4">
+      <div className="mb-3 flex gap-2">
+        {KINDS.map((k) => (
+          <NavLink
+            key={k}
+            to={`/authorities/${k}`}
+            className={({ isActive }) =>
+              `rounded px-3 py-1 text-sm ${isActive ? "bg-neutral-800 text-white" : "border"}`
+            }
+          >
+            {t(`authorities.${k}`)}
+          </NavLink>
+        ))}
+      </div>
+
+      <ul className="mb-4">
+        {authorities?.length === 0 && (
+          <li className="text-sm text-neutral-500">{t("authorities.empty")}</li>
+        )}
+        {authorities?.map((a) => (
+          <li key={a.id} className="border-b py-1 text-sm">
+            {labelText(a.labels, lang)}
+          </li>
+        ))}
+      </ul>
+
+      <form onSubmit={onCreate} className="space-y-2 border-t pt-3">
+        <div className="text-sm font-medium">
+          {t("authorities.new")} · {t(`authorities.${kind}`)}
+        </div>
+
+        <LabelEditor value={labels} onChange={setLabels} />
+
+        {error && (
+          <p role="alert" className="text-xs text-red-600">
+            {t("form.required")}
+          </p>
+        )}
+
+        {create.isError && (
+          <p role="alert" className="text-xs text-red-600">
+            {t("form.rejected")}
+          </p>
+        )}
+
+        <Button type="submit" size="sm" disabled={create.isPending}>
+          {t("authorities.create")}
+        </Button>
+      </form>
+    </div>
+  );
+}
diff --git a/web/src/authorities/authorities.test.tsx b/web/src/authorities/authorities.test.tsx
new file mode 100644
index 0000000..58e49c3
--- /dev/null
+++ b/web/src/authorities/authorities.test.tsx
@@ -0,0 +1,57 @@
+import { expect, test } from "vitest";
+import { screen, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { http, HttpResponse } from "msw";
+import { Routes, Route } from "react-router-dom";
+import { server } from "../test/server";
+import { renderApp } from "../test/render";
+import { AuthoritiesPage } from "./authorities-page";
+
+function tree() {
+  return (
+    <Routes>
+      <Route path="/authorities/:kind" element={<AuthoritiesPage />} />
+    </Routes>
+  );
+}
+
+test("lists authorities for the kind and creates one", async () => {
+  let body: unknown;
+  server.use(
+    http.post("/api/admin/authorities", async ({ request }) => {
+      body = await request.json();
+      return HttpResponse.json({ id: "a-c" }, { status: 201 });
+    }),
+  );
+  renderApp(tree(), { route: "/authorities/person" });
+  expect(await screen.findByText("Ada Lovelace")).toBeInTheDocument();
+  await userEvent.type(screen.getByLabelText(/label \(en\)/i), "Carl von Linné");
+  await userEvent.click(screen.getByRole("button", { name: /create/i }));
+  await waitFor(() => expect((body as { kind: string })?.kind).toBe("person"));
+  expect((body as { labels: { label: string }[] }).labels[0].label).toBe("Carl von Linné");
+});
+
+test("kind tabs link to the other kinds", async () => {
+  renderApp(tree(), { route: "/authorities/person" });
+  expect(await screen.findByRole("link", { name: /place/i })).toHaveAttribute("href", "/authorities/place");
+});
+
+test("create without EN label shows required alert and does not POST", async () => {
+  let posted = false;
+  server.use(
+    http.post("/api/admin/authorities", () => {
+      posted = true;
+      return HttpResponse.json({ id: "a-x" }, { status: 201 });
+    }),
+  );
+  renderApp(tree(), { route: "/authorities/person" });
+  expect(await screen.findByText("Ada Lovelace")).toBeInTheDocument();
+  await userEvent.click(screen.getByRole("button", { name: /create/i }));
+  expect(screen.getByRole("alert")).toBeInTheDocument();
+  expect(posted).toBe(false);
+});
+
+test("unknown kind redirects to person list", async () => {
+  renderApp(tree(), { route: "/authorities/banana" });
+  expect(await screen.findByText("Ada Lovelace")).toBeInTheDocument();
+});
diff --git a/web/src/components/label-editor.test.tsx b/web/src/components/label-editor.test.tsx
new file mode 100644
index 0000000..35bf81c
--- /dev/null
+++ b/web/src/components/label-editor.test.tsx
@@ -0,0 +1,37 @@
+import { useState } from "react";
+import { expect, test } from "vitest";
+import { screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { renderApp } from "../test/render";
+import { LabelEditor } from "./label-editor";
+import type { components } from "../api/schema";
+
+type LabelInput = components["schemas"]["LabelInput"];
+
+function Harness({ onChange }: { onChange: (v: LabelInput[]) => void }) {
+  const [value, setValue] = useState<LabelInput[]>([]);
+  return (
+    <LabelEditor
+      value={value}
+      onChange={(v) => {
+        setValue(v);
+        onChange(v);
+      }}
+    />
+  );
+}
+
+test("typing EN and SV emits both labels; empty langs are omitted", async () => {
+  const seen: LabelInput[][] = [];
+  renderApp(<Harness onChange={(v) => seen.push(v)} />);
+  await userEvent.type(screen.getByLabelText(/label \(en\)/i), "Bronze");
+  await userEvent.type(screen.getByLabelText(/label \(sv\)/i), "Brons");
+  const last = seen[seen.length - 1]!;
+  expect(last).toEqual(
+    expect.arrayContaining([
+      { lang: "en", label: "Bronze" },
+      { lang: "sv", label: "Brons" },
+    ]),
+  );
+  expect(seen.some((v) => v.length === 1 && v[0].lang === "en")).toBe(true);
+});
diff --git a/web/src/components/label-editor.tsx b/web/src/components/label-editor.tsx
new file mode 100644
index 0000000..1c07bc7
--- /dev/null
+++ b/web/src/components/label-editor.tsx
@@ -0,0 +1,47 @@
+import { useTranslation } from "react-i18next";
+
+import type { components } from "../api/schema";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+
+type LabelInput = components["schemas"]["LabelInput"];
+
+/** Controlled sv/en label editor. Emits LabelInput[] with only the non-empty langs. */
+export function LabelEditor({
+  value,
+  onChange,
+}: {
+  value: LabelInput[];
+  onChange: (labels: LabelInput[]) => void;
+}) {
+  const { t } = useTranslation();
+
+  const valueFor = (lang: string) => value.find((l) => l.lang === lang)?.label ?? "";
+
+  const set = (lang: string, label: string) => {
+    const others = value.filter((l) => l.lang !== lang);
+
+    onChange(label.trim() ? [...others, { lang, label }] : others);
+  };
+
+  return (
+    <div className="space-y-2">
+      <div className="space-y-1">
+        <Label htmlFor="label-en">{t("labels.en")}</Label>
+        <Input
+          id="label-en"
+          value={valueFor("en")}
+          onChange={(e) => set("en", e.target.value)}
+        />
+      </div>
+      <div className="space-y-1">
+        <Label htmlFor="label-sv">{t("labels.sv")}</Label>
+        <Input
+          id="label-sv"
+          value={valueFor("sv")}
+          onChange={(e) => set("sv", e.target.value)}
+        />
+      </div>
+    </div>
+  );
+}
diff --git a/web/src/i18n/en.json b/web/src/i18n/en.json
index 21f404a..eb1d289 100644
--- a/web/src/i18n/en.json
+++ b/web/src/i18n/en.json
@@ -7,6 +7,17 @@
   "visibility": { "draft": "Draft", "internal": "Internal", "public": "Public" },
   "form": { "selectPlaceholder": "— select —", "create": "Create object", "save": "Save", "cancel": "Cancel", "visibility": "Visibility", "draft": "Draft", "internal": "Internal", "required": "This field is required", "rejected": "The server rejected the changes — check required and referenced fields", "flexibleHeading": "Catalogue fields" },
   "actions": { "edit": "Edit", "delete": "Delete", "confirmDelete": "Delete this object? This cannot be undone." },
+  "labels": { "en": "Label (EN)", "sv": "Label (SV)", "externalUri": "External URI (optional)" },
+  "vocab": {
+    "title": "Vocabularies", "newVocabulary": "New vocabulary", "key": "Key",
+    "create": "Create", "selectPrompt": "Select a vocabulary to manage its terms",
+    "terms": "Terms", "addTerm": "Add term", "empty": "No vocabularies yet",
+    "noTerms": "No terms yet", "loadError": "Could not load"
+  },
+  "authorities": {
+    "title": "Authorities", "person": "Person", "organisation": "Organisation", "place": "Place",
+    "new": "New", "create": "Create", "empty": "No authorities yet", "loadError": "Could not load"
+  },
   "publish": {
     "heading": "Visibility",
     "advanceInternal": "Advance to internal",
diff --git a/web/src/i18n/sv.json b/web/src/i18n/sv.json
index 93e15b8..56e4f7e 100644
--- a/web/src/i18n/sv.json
+++ b/web/src/i18n/sv.json
@@ -7,6 +7,17 @@
   "visibility": { "draft": "Utkast", "internal": "Intern", "public": "Publik" },
   "form": { "selectPlaceholder": "— välj —", "create": "Skapa föremål", "save": "Spara", "cancel": "Avbryt", "visibility": "Synlighet", "draft": "Utkast", "internal": "Intern", "required": "Fältet är obligatoriskt", "rejected": "Servern avvisade ändringarna — kontrollera obligatoriska och refererade fält", "flexibleHeading": "Katalogfält" },
   "actions": { "edit": "Redigera", "delete": "Ta bort", "confirmDelete": "Ta bort detta föremål? Detta kan inte ångras." },
+  "labels": { "en": "Etikett (EN)", "sv": "Etikett (SV)", "externalUri": "Extern URI (valfritt)" },
+  "vocab": {
+    "title": "Vokabulär", "newVocabulary": "Ny vokabulär", "key": "Nyckel",
+    "create": "Skapa", "selectPrompt": "Välj en vokabulär för att hantera dess termer",
+    "terms": "Termer", "addTerm": "Lägg till term", "empty": "Inga vokabulärer ännu",
+    "noTerms": "Inga termer ännu", "loadError": "Kunde inte ladda"
+  },
+  "authorities": {
+    "title": "Auktoriteter", "person": "Person", "organisation": "Organisation", "place": "Plats",
+    "new": "Ny", "create": "Skapa", "empty": "Inga auktoriteter ännu", "loadError": "Kunde inte ladda"
+  },
   "publish": {
     "heading": "Synlighet",
     "advanceInternal": "Gör intern",
diff --git a/web/src/lib/labels.ts b/web/src/lib/labels.ts
new file mode 100644
index 0000000..6485cd5
--- /dev/null
+++ b/web/src/lib/labels.ts
@@ -0,0 +1,12 @@
+import type { components } from "../api/schema";
+
+type LabelView = components["schemas"]["LabelView"];
+
+export function labelText(labels: LabelView[], lang: string): string {
+  return (
+    labels.find((l) => l.lang === lang)?.label ??
+    labels.find((l) => l.lang === "en")?.label ??
+    labels[0]?.label ??
+    ""
+  );
+}
diff --git a/web/src/shell/app-shell.tsx b/web/src/shell/app-shell.tsx
index 2ff6c69..1ab6a0c 100644
--- a/web/src/shell/app-shell.tsx
+++ b/web/src/shell/app-shell.tsx
@@ -5,7 +5,7 @@ import { useLogout } from "../api/queries";
 import { Button } from "@/components/ui/button";
 import { LangSwitch } from "./lang-switch";
 
-const FUTURE = ["vocabularies", "authorities", "fields", "search"] as const;
+const DISABLED_NAV = ["fields", "search"] as const;
 
 export function AppShell() {
   const { t } = useTranslation();
@@ -30,7 +30,23 @@ export function AppShell() {
           >
             {t("nav.objects")}
           </NavLink>
-          {FUTURE.map((key) => (
+          <NavLink
+            to="/vocabularies"
+            className={({ isActive }) =>
+              `block rounded px-2 py-1 ${isActive ? "bg-neutral-200 font-medium" : ""}`
+            }
+          >
+            {t("nav.vocabularies")}
+          </NavLink>
+          <NavLink
+            to="/authorities"
+            className={({ isActive }) =>
+              `block rounded px-2 py-1 ${isActive ? "bg-neutral-200 font-medium" : ""}`
+            }
+          >
+            {t("nav.authorities")}
+          </NavLink>
+          {DISABLED_NAV.map((key) => (
             <button
               key={key}
               disabled
diff --git a/web/src/test/fixtures.ts b/web/src/test/fixtures.ts
index d6a650f..a53fdad 100644
--- a/web/src/test/fixtures.ts
+++ b/web/src/test/fixtures.ts
@@ -62,3 +62,10 @@ export const materialTerms: TermView[] = [
 export const personAuthorities: AuthorityView[] = [
   { id: "a-ada", kind: "person", external_uri: null, labels: [{ lang: "en", label: "Ada Lovelace" }] },
 ];
+
+export type VocabularyView = components["schemas"]["VocabularyView"];
+
+export const vocabularies: VocabularyView[] = [
+  { id: "v-material", key: "material" },
+  { id: "v-technique", key: "technique" },
+];
diff --git a/web/src/test/handlers.ts b/web/src/test/handlers.ts
index dce24de..db0599f 100644
--- a/web/src/test/handlers.ts
+++ b/web/src/test/handlers.ts
@@ -1,6 +1,6 @@
 import { http, HttpResponse } from "msw";
 
-import { amphora, fibula, fieldDefinitions, materialTerms, objectsPage, personAuthorities } from "./fixtures";
+import { amphora, fibula, fieldDefinitions, materialTerms, objectsPage, personAuthorities, vocabularies } from "./fixtures";
 
 export const handlers = [
   http.get("/api/admin/me", () =>
@@ -17,6 +17,8 @@ export const handlers = [
 
   http.get("/api/admin/field-definitions", () => HttpResponse.json(fieldDefinitions)),
 
+  http.get("/api/admin/vocabularies", () => HttpResponse.json(vocabularies)),
+
   http.get("/api/admin/vocabularies/:id/terms", () => HttpResponse.json(materialTerms)),
 
   http.get("/api/admin/authorities", ({ request }) => {
@@ -25,6 +27,18 @@ export const handlers = [
     return HttpResponse.json(kind === "person" ? personAuthorities : []);
   }),
 
+  http.post("/api/admin/vocabularies", () =>
+    HttpResponse.json({ id: "v-new", key: "new" }, { status: 201 }),
+  ),
+
+  http.post("/api/admin/vocabularies/:id/terms", () =>
+    HttpResponse.json({ id: "t-new" }, { status: 201 }),
+  ),
+
+  http.post("/api/admin/authorities", () =>
+    HttpResponse.json({ id: "a-new" }, { status: 201 }),
+  ),
+
   http.post("/api/admin/objects", () =>
     HttpResponse.json({ id: "11111111-1111-1111-1111-111111111111" }, { status: 201 }),
   ),
diff --git a/web/src/vocab/select-vocabulary-prompt.tsx b/web/src/vocab/select-vocabulary-prompt.tsx
new file mode 100644
index 0000000..24ecdef
--- /dev/null
+++ b/web/src/vocab/select-vocabulary-prompt.tsx
@@ -0,0 +1,11 @@
+import { useTranslation } from "react-i18next";
+
+export function SelectVocabularyPrompt() {
+  const { t } = useTranslation();
+
+  return (
+    <div className="flex h-full items-center justify-center p-4 text-sm text-neutral-400">
+      {t("vocab.selectPrompt")}
+    </div>
+  );
+}
diff --git a/web/src/vocab/vocabularies-page.tsx b/web/src/vocab/vocabularies-page.tsx
new file mode 100644
index 0000000..ac24fcc
--- /dev/null
+++ b/web/src/vocab/vocabularies-page.tsx
@@ -0,0 +1,16 @@
+import { Outlet } from "react-router-dom";
+
+import { VocabularyList } from "./vocabulary-list";
+
+export function VocabulariesPage() {
+  return (
+    <div className="grid h-full grid-cols-[20rem_1fr]">
+      <div className="overflow-hidden border-r">
+        <VocabularyList />
+      </div>
+      <div className="overflow-hidden">
+        <Outlet />
+      </div>
+    </div>
+  );
+}
diff --git a/web/src/vocab/vocabularies.test.tsx b/web/src/vocab/vocabularies.test.tsx
new file mode 100644
index 0000000..9e7b30a
--- /dev/null
+++ b/web/src/vocab/vocabularies.test.tsx
@@ -0,0 +1,68 @@
+import { expect, test } from "vitest";
+import { screen, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { http, HttpResponse } from "msw";
+import { Routes, Route } from "react-router-dom";
+import { server } from "../test/server";
+import { renderApp } from "../test/render";
+import { VocabulariesPage } from "./vocabularies-page";
+import { VocabularyTerms } from "./vocabulary-terms";
+import { SelectVocabularyPrompt } from "./select-vocabulary-prompt";
+
+function tree() {
+  return (
+    <Routes>
+      <Route path="/vocabularies" element={<VocabulariesPage />}>
+        <Route index element={<SelectVocabularyPrompt />} />
+        <Route path=":id" element={<VocabularyTerms />} />
+      </Route>
+    </Routes>
+  );
+}
+
+test("lists vocabularies and creates one", async () => {
+  let body: unknown;
+  server.use(
+    http.post("/api/admin/vocabularies", async ({ request }) => {
+      body = await request.json();
+      return HttpResponse.json({ id: "v-c", key: "colour" }, { status: 201 });
+    }),
+  );
+  renderApp(tree(), { route: "/vocabularies" });
+  expect(await screen.findByText("material")).toBeInTheDocument();
+  await userEvent.type(screen.getByLabelText(/key/i), "colour");
+  await userEvent.click(screen.getByRole("button", { name: /create/i }));
+  await waitFor(() => expect((body as { key: string })?.key).toBe("colour"));
+});
+
+test("selecting a vocabulary shows its terms and adds one", async () => {
+  let termBody: unknown;
+  server.use(
+    http.post("/api/admin/vocabularies/:id/terms", async ({ request }) => {
+      termBody = await request.json();
+      return HttpResponse.json({ id: "t-c" }, { status: 201 });
+    }),
+  );
+  renderApp(tree(), { route: "/vocabularies/v-material" });
+  expect(await screen.findByText("Bronze")).toBeInTheDocument();
+  await userEvent.type(screen.getByLabelText(/label \(en\)/i), "Stone");
+  await userEvent.click(screen.getByRole("button", { name: /add term/i }));
+  await waitFor(() =>
+    expect((termBody as { labels: { label: string }[] })?.labels[0].label).toBe("Stone"),
+  );
+});
+
+test("add term without EN label shows required alert and does not POST", async () => {
+  let posted = false;
+  server.use(
+    http.post("/api/admin/vocabularies/:id/terms", () => {
+      posted = true;
+      return HttpResponse.json({ id: "t-x" }, { status: 201 });
+    }),
+  );
+  renderApp(tree(), { route: "/vocabularies/v-material" });
+  expect(await screen.findByText("Bronze")).toBeInTheDocument();
+  await userEvent.click(screen.getByRole("button", { name: /add term/i }));
+  expect(screen.getByRole("alert")).toBeInTheDocument();
+  expect(posted).toBe(false);
+});
diff --git a/web/src/vocab/vocabulary-list.tsx b/web/src/vocab/vocabulary-list.tsx
new file mode 100644
index 0000000..41e07d5
--- /dev/null
+++ b/web/src/vocab/vocabulary-list.tsx
@@ -0,0 +1,73 @@
+import { useState, type FormEvent } from "react";
+import { NavLink } from "react-router-dom";
+import { useTranslation } from "react-i18next";
+
+import { useVocabularies, useCreateVocabulary } from "../api/queries";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+
+export function VocabularyList() {
+  const { t } = useTranslation();
+
+  const { data, isLoading, isError } = useVocabularies();
+
+  const create = useCreateVocabulary();
+
+  const [key, setKey] = useState("");
+
+  const onCreate = (event: FormEvent) => {
+    event.preventDefault();
+
+    if (!key.trim()) return;
+
+    create.mutate({ key: key.trim() }, { onSuccess: () => setKey("") });
+  };
+
+  return (
+    <div className="flex h-full flex-col">
+      <form onSubmit={onCreate} className="space-y-1 border-b p-3">
+        <div className="text-sm font-medium">{t("vocab.newVocabulary")}</div>
+        <Label htmlFor="vocab-key">{t("vocab.key")}</Label>
+        <div className="flex gap-2">
+          <Input
+            id="vocab-key"
+            value={key}
+            onChange={(e) => setKey(e.target.value)}
+          />
+          <Button type="submit" size="sm" disabled={create.isPending}>
+            {t("vocab.create")}
+          </Button>
+        </div>
+        {create.isError && (
+          <p role="alert" className="text-xs text-red-600">
+            {t("form.rejected")}
+          </p>
+        )}
+      </form>
+      <ul className="flex-1 overflow-auto">
+        {isLoading && (
+          <li className="p-3 text-sm text-neutral-400">…</li>
+        )}
+        {isError && (
+          <li className="p-3 text-sm text-red-600">{t("vocab.loadError")}</li>
+        )}
+        {data?.length === 0 && (
+          <li className="p-3 text-sm text-neutral-500">{t("vocab.empty")}</li>
+        )}
+        {data?.map((v) => (
+          <li key={v.id}>
+            <NavLink
+              to={`/vocabularies/${v.id}`}
+              className={({ isActive }) =>
+                `block border-b px-3 py-2 text-sm ${isActive ? "bg-indigo-50" : "hover:bg-neutral-50"}`
+              }
+            >
+              {v.key}
+            </NavLink>
+          </li>
+        ))}
+      </ul>
+    </div>
+  );
+}
diff --git a/web/src/vocab/vocabulary-terms.tsx b/web/src/vocab/vocabulary-terms.tsx
new file mode 100644
index 0000000..f6cb86f
--- /dev/null
+++ b/web/src/vocab/vocabulary-terms.tsx
@@ -0,0 +1,92 @@
+import { useState, type FormEvent } from "react";
+import { useParams } from "react-router-dom";
+import { useTranslation } from "react-i18next";
+
+import type { components } from "../api/schema";
+import { useTerms, useAddTerm } from "../api/queries";
+import { LabelEditor } from "../components/label-editor";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { labelText } from "../lib/labels";
+
+type LabelInput = components["schemas"]["LabelInput"];
+
+export function VocabularyTerms() {
+  const { t, i18n } = useTranslation();
+
+  const { id } = useParams();
+
+  const lang = i18n.language.startsWith("sv") ? "sv" : "en";
+
+  const { data: terms } = useTerms(id);
+
+  const addTerm = useAddTerm();
+
+  const [labels, setLabels] = useState<LabelInput[]>([]);
+
+  const [uri, setUri] = useState("");
+
+  const [error, setError] = useState(false);
+
+  if (!id) return null;
+
+  const onAdd = (event: FormEvent) => {
+    event.preventDefault();
+
+    if (!labels.some((l) => l.lang === "en" && l.label)) {
+      setError(true);
+      return;
+    }
+
+    setError(false);
+
+    addTerm.mutate(
+      { vocabularyId: id, external_uri: uri.trim() || null, labels },
+      { onSuccess: () => { setLabels([]); setUri(""); } },
+    );
+  };
+
+  return (
+    <div className="overflow-auto p-4">
+      <h3 className="mb-2 text-sm font-medium uppercase text-neutral-500">
+        {t("vocab.terms")}
+      </h3>
+      <ul className="mb-4">
+        {terms?.length === 0 && (
+          <li className="text-sm text-neutral-500">{t("vocab.noTerms")}</li>
+        )}
+        {terms?.map((term) => (
+          <li key={term.id} className="border-b py-1 text-sm">
+            {labelText(term.labels, lang)}
+          </li>
+        ))}
+      </ul>
+      <form onSubmit={onAdd} className="space-y-2 border-t pt-3">
+        <div className="text-sm font-medium">{t("vocab.addTerm")}</div>
+        <LabelEditor value={labels} onChange={setLabels} />
+        <div className="space-y-1">
+          <Label htmlFor="term-uri">{t("labels.externalUri")}</Label>
+          <Input
+            id="term-uri"
+            value={uri}
+            onChange={(e) => setUri(e.target.value)}
+          />
+        </div>
+        {error && (
+          <p role="alert" className="text-xs text-red-600">
+            {t("form.required")}
+          </p>
+        )}
+        {addTerm.isError && (
+          <p role="alert" className="text-xs text-red-600">
+            {t("form.rejected")}
+          </p>
+        )}
+        <Button type="submit" size="sm" disabled={addTerm.isPending}>
+          {t("vocab.addTerm")}
+        </Button>
+      </form>
+    </div>
+  );
+}