diff --git a/src/app/backend/BackendShell.tsx b/src/app/backend/BackendShell.tsx
index 4362dfc..5e3ef7a 100644
--- a/src/app/backend/BackendShell.tsx
+++ b/src/app/backend/BackendShell.tsx
@@ -15,6 +15,7 @@ const TITLES: Record<string, [string, string]> = {
     "Validez les offres soumises par les adhérents",
   ],
   "/backend/administrateurs": ["Administrateurs", "Gérer les accès à l'administration"],
+  "/backend/categories": ["Catégories", "Gérer les métiers de l'annuaire"],
   "/backend/espace": ["Mon espace adhérent", "Publiez et suivez vos promotions"],
 };
 
@@ -116,6 +117,11 @@ export function BackendShell({
                   </span>
                 </NavLink>
               )}
+              {can(user.role, "manageCategories") && (
+                <NavLink href="/backend/categories" active={pathname === "/backend/categories"}>
+                  {dotDiamond}Catégories
+                </NavLink>
+              )}
               {can(user.role, "manageAdmins") && (
                 <NavLink href="/backend/administrateurs" active={pathname === "/backend/administrateurs"}>
                   {dot}Administrateurs
diff --git a/src/app/backend/actions.ts b/src/app/backend/actions.ts
index 9265507..bdffa90 100644
--- a/src/app/backend/actions.ts
+++ b/src/app/backend/actions.ts
@@ -1,12 +1,13 @@
 "use server";
 
 import { revalidatePath } from "next/cache";
-import { eq } from "drizzle-orm";
+import { eq, sql } from "drizzle-orm";
 import bcrypt from "bcryptjs";
 import { auth, signOut } from "@/auth";
 import { db } from "@/db";
 import {
   activityLog,
+  categories,
   members,
   promotions,
   users,
@@ -14,6 +15,27 @@ import {
 import { can, LABEL_TO_ROLE } from "@/lib/rbac";
 import type { AppRole } from "@/types/next-auth";
 
+const CATEGORY_PALETTE = [
+  { accent: "#E0A63C", tint: "#f6efdc" },
+  { accent: "#6FB0C6", tint: "#e7f0f3" },
+  { accent: "#9a6638", tint: "#f4ebda" },
+  { accent: "#2C6FB3", tint: "#eaf0f6" },
+  { accent: "#5a7a5a", tint: "#eef0ec" },
+  { accent: "#7a6f9c", tint: "#efe9f3" },
+  { accent: "#c98a2e", tint: "#f7efe0" },
+  { accent: "#3f8aa3", tint: "#e6eff2" },
+];
+
+function slugify(input: string): string {
+  return input
+    .normalize("NFD")
+    .replace(/[̀-ͯ]/g, "")
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, "-")
+    .replace(/^-+|-+$/g, "")
+    .slice(0, 70);
+}
+
 async function logActivity(message: string, dot = "#2C6FB3") {
   await db.insert(activityLog).values({ message, dot });
 }
@@ -183,6 +205,65 @@ export async function removeAdmin(formData: FormData) {
   revalidatePath("/backend/administrateurs");
 }
 
+// ---- Categories ----
+export async function addCategory(formData: FormData) {
+  const { role } = await requireRole();
+  if (!can(role, "manageCategories")) throw new Error("Accès refusé");
+
+  const label = String(formData.get("label") ?? "").trim();
+  if (!label) return;
+
+  let base = slugify(label) || "categorie";
+  let slug = base;
+  let n = 2;
+  while ((await db.select({ id: categories.id }).from(categories).where(eq(categories.slug, slug))).length > 0) {
+    slug = `${base}-${n++}`;
+  }
+
+  const existing = await db.select({ id: categories.id }).from(categories);
+  const palette = CATEGORY_PALETTE[existing.length % CATEGORY_PALETTE.length];
+  const [{ max } = { max: 0 }] = await db
+    .select({ max: sql<number>`coalesce(max(${categories.sort}), 0)` })
+    .from(categories);
+
+  await db.insert(categories).values({
+    slug,
+    label,
+    accent: palette.accent,
+    tint: palette.tint,
+    sort: Number(max) + 1,
+  });
+
+  revalidatePath("/backend/categories");
+  revalidatePath("/annuaire");
+}
+
+export async function renameCategory(formData: FormData) {
+  const { role } = await requireRole();
+  if (!can(role, "manageCategories")) throw new Error("Accès refusé");
+  const id = Number(formData.get("id"));
+  const label = String(formData.get("label") ?? "").trim();
+  if (!id || !label) return;
+  await db.update(categories).set({ label }).where(eq(categories.id, id));
+  revalidatePath("/backend/categories");
+  revalidatePath("/annuaire");
+}
+
+export async function deleteCategory(formData: FormData) {
+  const { role } = await requireRole();
+  if (!can(role, "manageCategories")) throw new Error("Accès refusé");
+  const id = Number(formData.get("id"));
+  if (!id) return;
+  // Detach members from this category, then delete it (avoids FK violation).
+  await db.transaction(async (tx) => {
+    await tx.update(members).set({ categoryId: null }).where(eq(members.categoryId, id));
+    await tx.delete(categories).where(eq(categories.id, id));
+  });
+  revalidatePath("/backend/categories");
+  revalidatePath("/backend/adherents");
+  revalidatePath("/annuaire");
+}
+
 // ---- Sign out ----
 export async function doSignOut() {
   await signOut({ redirectTo: "/" });
diff --git a/src/app/backend/categories/page.tsx b/src/app/backend/categories/page.tsx
new file mode 100644
index 0000000..a7afdb9
--- /dev/null
+++ b/src/app/backend/categories/page.tsx
@@ -0,0 +1,90 @@
+import { redirect } from "next/navigation";
+import { asc, count, eq } from "drizzle-orm";
+import { auth } from "@/auth";
+import { db } from "@/db";
+import { categories, members } from "@/db/schema";
+import { can } from "@/lib/rbac";
+import { addCategory, deleteCategory, renameCategory } from "../actions";
+
+export const dynamic = "force-dynamic";
+
+export default async function CategoriesPage() {
+  const session = await auth();
+  if (!can(session?.user.role, "manageCategories")) {
+    redirect("/backend");
+  }
+
+  const rows = await db
+    .select({
+      id: categories.id,
+      slug: categories.slug,
+      label: categories.label,
+      accent: categories.accent,
+      tint: categories.tint,
+      memberCount: count(members.id),
+    })
+    .from(categories)
+    .leftJoin(members, eq(members.categoryId, categories.id))
+    .groupBy(categories.id)
+    .orderBy(asc(categories.sort));
+
+  return (
+    <div className="grid admins-split">
+      {/* list */}
+      <div style={{ background: "#fff", border: "1px solid #e6dcc6", borderRadius: 16, overflow: "hidden" }}>
+        <div className="font-display" style={{ padding: "16px 22px", borderBottom: "1px solid #f0e8d6", fontWeight: 700, fontSize: 16, color: "#26201a" }}>
+          Catégories ({rows.length})
+        </div>
+
+        {rows.map((c) => (
+          <div key={c.id} style={{ display: "flex", alignItems: "center", gap: 12, padding: "12px 22px", borderBottom: "1px solid #f4eede", flexWrap: "wrap" }}>
+            <span style={{ width: 28, height: 28, borderRadius: 8, background: c.tint, display: "flex", alignItems: "center", justifyContent: "center", flexShrink: 0 }}>
+              <span className="sparkle" style={{ width: 12, height: 12, background: c.accent }} />
+            </span>
+
+            <form action={renameCategory} style={{ display: "flex", alignItems: "center", gap: 8, flex: 1, minWidth: 220 }}>
+              <input type="hidden" name="id" value={c.id} />
+              <input name="label" defaultValue={c.label} className="field" style={{ padding: "8px 11px", flex: 1 }} />
+              <button type="submit" style={{ border: "1px solid #d8cdb4", background: "#faf7ef", color: "#3c3322", fontWeight: 700, fontSize: 12.5, padding: "8px 12px", borderRadius: 9, cursor: "pointer", whiteSpace: "nowrap" }}>
+                Renommer
+              </button>
+            </form>
+
+            <span style={{ fontSize: 12, color: "#a99c82", whiteSpace: "nowrap" }}>
+              {c.memberCount} adhérent{c.memberCount > 1 ? "s" : ""}
+            </span>
+
+            <form action={deleteCategory}>
+              <input type="hidden" name="id" value={c.id} />
+              <button type="submit" style={{ border: "none", background: "transparent", color: "#d8472b", fontWeight: 700, fontSize: 12.5, cursor: "pointer" }}>
+                Supprimer
+              </button>
+            </form>
+          </div>
+        ))}
+      </div>
+
+      {/* add */}
+      <div style={{ background: "#fff", border: "1px solid #e6dcc6", borderRadius: 16, padding: 22 }}>
+        <h3 className="font-display" style={{ fontWeight: 700, fontSize: 16, margin: "0 0 16px", color: "#26201a" }}>
+          Ajouter une catégorie
+        </h3>
+        <form action={addCategory}>
+          <label className="field-label">Nom de la catégorie</label>
+          <input name="label" required placeholder="ex : Cordonnerie" className="field" style={{ marginBottom: 16 }} />
+          <button
+            type="submit"
+            className="font-display"
+            style={{ width: "100%", border: "none", background: "#13324F", color: "#fff", fontWeight: 700, fontSize: 14.5, padding: 13, borderRadius: 11, cursor: "pointer" }}
+          >
+            Ajouter
+          </button>
+        </form>
+        <p style={{ fontSize: 11.5, color: "#a99c82", marginTop: 12, lineHeight: 1.5 }}>
+          Une couleur est attribuée automatiquement. Supprimer une catégorie détache
+          les adhérents concernés (ils restent, sans catégorie).
+        </p>
+      </div>
+    </div>
+  );
+}
diff --git a/src/lib/rbac.ts b/src/lib/rbac.ts
index 1c03b99..f44fa41 100644
--- a/src/lib/rbac.ts
+++ b/src/lib/rbac.ts
@@ -19,10 +19,18 @@ type Capability =
   | "manageMembers"
   | "moderatePromos"
   | "manageAdmins"
+  | "manageCategories"
   | "memberSpace";
 
 const CAPABILITIES: Record<AppRole, Capability[]> = {
-  admin: ["viewDashboard", "manageMembers", "moderatePromos", "manageAdmins", "memberSpace"],
+  admin: [
+    "viewDashboard",
+    "manageMembers",
+    "moderatePromos",
+    "manageAdmins",
+    "manageCategories",
+    "memberSpace",
+  ],
   moderator: ["viewDashboard", "manageMembers", "moderatePromos"],
   editor: ["viewDashboard", "manageMembers"],
   member: ["memberSpace"],