diff --git a/app/Http/Controllers/LieuController.php b/app/Http/Controllers/LieuController.php
index d2aa5ee..e087e73 100644
--- a/app/Http/Controllers/LieuController.php
+++ b/app/Http/Controllers/LieuController.php
@@ -10,6 +10,7 @@ use App\Support\DbCompat;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Http\Response;
 use Illuminate\Support\Facades\DB;
 use Illuminate\View\View;
 
@@ -129,6 +130,112 @@ class LieuController extends Controller
             ->with('success', 'Lieu supprimé.');
     }
 
+    public function exportCsv(): Response
+    {
+        $this->authorize('viewAny', Lieu::class);
+
+        $lieux = Lieu::with(['lieuType', 'parent'])->orderBy('nom_long')->get();
+
+        $handle = fopen('php://temp', 'r+');
+        fwrite($handle, "\xEF\xBB\xBF");
+
+        fputcsv($handle, ['nom', 'code', 'type', 'lieu_parent', 'latitude', 'longitude', 'note'], ';');
+
+        foreach ($lieux as $lieu) {
+            fputcsv($handle, [
+                $lieu->nom,
+                $lieu->code ?? '',
+                $lieu->lieuType?->nom ?? '',
+                $lieu->parent?->nom_long ?? '',
+                $lieu->latitude ?? '',
+                $lieu->longitude ?? '',
+                $lieu->note ?? '',
+            ], ';');
+        }
+
+        rewind($handle);
+        $csv = stream_get_contents($handle);
+        fclose($handle);
+
+        return response($csv, 200, [
+            'Content-Type'        => 'text/csv; charset=UTF-8',
+            'Content-Disposition' => 'attachment; filename="lieux.csv"',
+        ]);
+    }
+
+    public function importCreate(): View
+    {
+        $this->authorize('create', Lieu::class);
+
+        return view('lieux.import');
+    }
+
+    public function importStore(Request $request): RedirectResponse
+    {
+        $this->authorize('create', Lieu::class);
+
+        $request->validate([
+            'fichier' => ['required', 'file', 'mimes:csv,txt', 'max:10240'],
+        ]);
+
+        $handle = fopen($request->file('fichier')->getRealPath(), 'r');
+
+        $bom = fread($handle, 3);
+        if ($bom !== "\xEF\xBB\xBF") {
+            rewind($handle);
+        }
+
+        $firstLine = fgets($handle);
+        rewind($handle);
+        if ($bom === "\xEF\xBB\xBF") {
+            fread($handle, 3);
+        }
+        $sep = substr_count($firstLine, ';') >= substr_count($firstLine, ',') ? ';' : ',';
+
+        $header = array_map('trim', fgetcsv($handle, 0, $sep) ?: []);
+        $colIdx = array_flip($header);
+
+        $lieuTypesCache = LieuType::all()->keyBy('nom');
+        $imported = 0;
+
+        while (($line = fgetcsv($handle, 0, $sep)) !== false) {
+            $nom = trim($line[$colIdx['nom'] ?? -1] ?? '');
+            if ($nom === '') {
+                continue;
+            }
+
+            $parentNomLong = trim($line[$colIdx['lieu_parent'] ?? -1] ?? '');
+            $typeName      = trim($line[$colIdx['type'] ?? -1] ?? '');
+
+            $parentId  = $parentNomLong
+                ? Lieu::where('nom_long', $parentNomLong)->value('id')
+                : null;
+            $lieuTypeId = $typeName
+                ? $lieuTypesCache->get($typeName)?->id
+                : null;
+
+            Lieu::create([
+                'nom'           => $nom,
+                'code'          => trim($line[$colIdx['code'] ?? -1] ?? '') ?: null,
+                'lieu_type_id'  => $lieuTypeId,
+                'lieu_parent_id'=> $parentId,
+                'latitude'      => ($v = trim($line[$colIdx['latitude']  ?? -1] ?? '')) !== '' ? (float) str_replace(',', '.', $v) : null,
+                'longitude'     => ($v = trim($line[$colIdx['longitude'] ?? -1] ?? '')) !== '' ? (float) str_replace(',', '.', $v) : null,
+                'note'          => trim($line[$colIdx['note'] ?? -1] ?? '') ?: null,
+            ]);
+            $imported++;
+        }
+
+        fclose($handle);
+
+        if ($imported === 0) {
+            return back()->with('error', 'Aucun lieu importé — vérifiez que la colonne « nom » est présente.');
+        }
+
+        return redirect()->route('lieux.index')
+            ->with('success', "{$imported} lieu(x) importé(s) avec succès.");
+    }
+
     private function getDescendantAndSelfIds(int $lieuId): array
     {
         $rows = DB::select("
diff --git a/resources/views/lieux/import.blade.php b/resources/views/lieux/import.blade.php
new file mode 100644
index 0000000..61d7b84
--- /dev/null
+++ b/resources/views/lieux/import.blade.php
@@ -0,0 +1,80 @@
+<x-app-layout>
+    <x-slot name="header">
+        <h2 class="text-xl font-semibold text-gray-800 dark:text-gray-200">Importer des lieux</h2>
+    </x-slot>
+
+    <div class="py-8 max-w-2xl mx-auto px-4 sm:px-6 lg:px-8 space-y-6">
+
+        @if(session('error'))
+            <div class="p-4 bg-red-50 dark:bg-red-900/30 border border-red-200 dark:border-red-700 text-red-800 dark:text-red-200 rounded-md">
+                {{ session('error') }}
+            </div>
+        @endif
+
+        <div class="bg-white dark:bg-gray-800 shadow rounded-lg p-6">
+            <form method="POST" action="{{ route('lieux.import.store') }}" enctype="multipart/form-data">
+                @csrf
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
+                        Fichier CSV <span class="text-red-500">*</span>
+                    </label>
+                    <input type="file" name="fichier" accept=".csv,.txt" required
+                           class="block w-full text-sm text-gray-700 dark:text-gray-300
+                                  file:mr-4 file:py-2 file:px-4 file:rounded-md file:border-0
+                                  file:text-sm file:font-medium file:bg-indigo-50 file:text-indigo-700
+                                  hover:file:bg-indigo-100 dark:file:bg-indigo-900/30 dark:file:text-indigo-300">
+                    @error('fichier')
+                        <p class="mt-1 text-sm text-red-600">{{ $message }}</p>
+                    @enderror
+                </div>
+                <div class="mt-5">
+                    <button type="submit"
+                            class="px-5 py-2 bg-indigo-600 text-white rounded-md hover:bg-indigo-700 text-sm">
+                        Importer
+                    </button>
+                </div>
+            </form>
+        </div>
+
+        <div class="bg-gray-50 dark:bg-gray-700 rounded-lg p-5 text-sm space-y-3">
+            <p class="font-medium text-gray-700 dark:text-gray-300">Format attendu</p>
+            <ul class="text-gray-600 dark:text-gray-400 space-y-1 list-disc list-inside">
+                <li>Encodage <strong>UTF-8</strong>, séparateur <strong>point-virgule</strong> (<code>;</code>) ou virgule (<code>,</code>)</li>
+                <li>Première ligne = en-têtes (noms exacts ci-dessous)</li>
+                <li>Le parent est identifié par son <strong>nom long complet</strong> (ex : <code>Gironde, France</code>)</li>
+                <li>Le type est identifié par son <strong>nom exact</strong> tel que défini dans les types de lieux</li>
+            </ul>
+
+            <div class="mt-3 overflow-x-auto">
+                <table class="text-xs border-collapse w-full">
+                    <thead>
+                        <tr class="bg-gray-200 dark:bg-gray-600">
+                            @foreach(['nom *', 'code', 'type', 'lieu_parent', 'latitude', 'longitude', 'note'] as $col)
+                                <th class="border border-gray-300 dark:border-gray-500 px-2 py-1 text-left font-mono text-gray-700 dark:text-gray-200">{{ $col }}</th>
+                            @endforeach
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <tr class="text-gray-500 dark:text-gray-400">
+                            <td class="border border-gray-300 dark:border-gray-500 px-2 py-1">Bordeaux</td>
+                            <td class="border border-gray-300 dark:border-gray-500 px-2 py-1">33063</td>
+                            <td class="border border-gray-300 dark:border-gray-500 px-2 py-1">Commune</td>
+                            <td class="border border-gray-300 dark:border-gray-500 px-2 py-1">Gironde, France</td>
+                            <td class="border border-gray-300 dark:border-gray-500 px-2 py-1">44.8378</td>
+                            <td class="border border-gray-300 dark:border-gray-500 px-2 py-1">-0.5792</td>
+                            <td class="border border-gray-300 dark:border-gray-500 px-2 py-1"></td>
+                        </tr>
+                    </tbody>
+                </table>
+            </div>
+
+            <p class="text-gray-500 dark:text-gray-400 text-xs mt-2">
+                Astuce : utilisez
+                <a href="{{ route('lieux.export.csv') }}" class="text-indigo-600 hover:underline">l'export CSV</a>
+                de la liste des lieux comme modèle.
+            </p>
+        </div>
+
+        <a href="{{ route('lieux.index') }}" class="text-sm text-indigo-600 hover:underline">← Retour aux lieux</a>
+    </div>
+</x-app-layout>
diff --git a/resources/views/lieux/index.blade.php b/resources/views/lieux/index.blade.php
index c031dc5..4ac2c1c 100644
--- a/resources/views/lieux/index.blade.php
+++ b/resources/views/lieux/index.blade.php
@@ -2,12 +2,22 @@
     <x-slot name="header">
         <div class="flex items-center justify-between">
             <h2 class="text-xl font-semibold text-gray-800 dark:text-gray-200">Lieux</h2>
-            @can('create', App\Models\Lieu::class)
-                <a href="{{ route('lieux.create') }}"
-                   class="px-4 py-2 bg-indigo-600 text-white text-sm rounded-md hover:bg-indigo-700">
-                    + Nouveau lieu
+            <div class="flex items-center gap-2">
+                <a href="{{ route('lieux.export.csv') }}"
+                   class="px-4 py-2 bg-white dark:bg-gray-800 border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 text-sm rounded-md hover:bg-gray-50 dark:hover:bg-gray-700">
+                    ↓ CSV
                 </a>
-            @endcan
+                @can('create', App\Models\Lieu::class)
+                    <a href="{{ route('lieux.import.create') }}"
+                       class="px-4 py-2 bg-white dark:bg-gray-800 border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 text-sm rounded-md hover:bg-gray-50 dark:hover:bg-gray-700">
+                        ↑ Importer CSV
+                    </a>
+                    <a href="{{ route('lieux.create') }}"
+                       class="px-4 py-2 bg-indigo-600 text-white text-sm rounded-md hover:bg-indigo-700">
+                        + Nouveau lieu
+                    </a>
+                @endcan
+            </div>
         </div>
     </x-slot>
 
diff --git a/routes/web.php b/routes/web.php
index a6d580d..e4996ae 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -46,7 +46,10 @@ Route::middleware('auth')->group(function () {
     Route::patch('/profile', [ProfileController::class, 'update'])->name('profile.update');
     Route::delete('/profile', [ProfileController::class, 'destroy'])->name('profile.destroy');
 
-    Route::get('lieux/search', [LieuController::class, 'search'])->name('lieux.search');
+    Route::get('lieux/search',         [LieuController::class, 'search'])->name('lieux.search');
+    Route::get('lieux/export/csv',     [LieuController::class, 'exportCsv'])->name('lieux.export.csv');
+    Route::get('lieux/import',         [LieuController::class, 'importCreate'])->name('lieux.import.create');
+    Route::post('lieux/import',        [LieuController::class, 'importStore'])->name('lieux.import.store');
     Route::resource('lieux', LieuController::class)->parameters(['lieux' => 'lieu']);
 
     Route::resource('sources', SourceController::class);