diff --git a/src/figures.py b/src/figures.py
index 974e902..bdfb690 100644
--- a/src/figures.py
+++ b/src/figures.py
@@ -1069,10 +1069,45 @@ def get_top_org_table(data, org_type: str, extra_columns: list, filters: bool =
     )
 
 
+# Libellés du menu de filtre AG Grid, traduits en français (option native
+# AG Grid localeText, exposée via dashGridOptions — n'affecte pas l'apparence
+# de base conservée au Lot 1, seulement le texte).
+AG_GRID_LOCALE_FR = {
+    # Filtres texte / nombre / date
+    "contains": "Contient",
+    "notContains": "Ne contient pas",
+    "equals": "Égal à",
+    "notEqual": "Différent de",
+    "startsWith": "Commence par",
+    "endsWith": "Se termine par",
+    "blank": "Vide",
+    "notBlank": "Non vide",
+    "empty": "Choisir une option",
+    "lessThan": "Inférieur à",
+    "lessThanOrEqual": "Inférieur ou égal à",
+    "greaterThan": "Supérieur à",
+    "greaterThanOrEqual": "Supérieur ou égal à",
+    "inRange": "Entre",
+    "inRangeStart": "de",
+    "inRangeEnd": "à",
+    # Chrome du menu de filtre
+    "filterOoo": "Filtrer...",
+    "applyFilter": "Appliquer",
+    "resetFilter": "Réinitialiser",
+    "clearFilter": "Effacer",
+    "cancelFilter": "Annuler",
+    "andCondition": "ET",
+    "orCondition": "OU",
+    "noRowsToShow": "Aucune ligne à afficher",
+    "loadingOoo": "Chargement...",
+}
+
+
 def ag_grid(grid_id: str, column_defs: list[dict]) -> "dag.AgGrid":
     """Grille AG Grid server-side (infinite) pour la page Tableau.
 
-    Apparence de base d'AG Grid (aucun thème custom au Lot 1).
+    Apparence de base d'AG Grid (aucun thème custom au Lot 1) ; libellés
+    de filtre traduits en français via localeText.
     """
     return dag.AgGrid(
         id=grid_id,
@@ -1086,6 +1121,7 @@ def ag_grid(grid_id: str, column_defs: list[dict]) -> "dag.AgGrid":
             "rowBuffer": 0,
             "infiniteInitialRowCount": 100,
             "suppressCellFocus": True,
+            "localeText": AG_GRID_LOCALE_FR,
         },
         columnSize="responsiveSizeToFit",
         style={"height": "70vh", "width": "100%"},
diff --git a/tests/test_figures.py b/tests/test_figures.py
index 2b62ea1..23b8383 100644
--- a/tests/test_figures.py
+++ b/tests/test_figures.py
@@ -349,3 +349,24 @@ def test_bounds_to_center_zoom_center_is_bbox_midpoint():
     center, _ = bounds_to_center_zoom(40.0, 0.0, 50.0, 4.0)
 
     assert center == [45.0, 2.0]
+
+
+def test_ag_grid_locale_text_translates_common_filter_labels():
+    from src.figures import ag_grid
+
+    grid = ag_grid("tableau_grid", [])
+    locale_text = grid.dashGridOptions["localeText"]
+
+    assert locale_text["equals"] == "Égal à"
+    assert locale_text["contains"] == "Contient"
+    assert locale_text["blank"] == "Vide"
+    assert locale_text["notBlank"] == "Non vide"
+
+
+def test_ag_grid_keeps_base_appearance():
+    """Pas de thème/className custom au Lot 1 (spec de design)."""
+    from src.figures import ag_grid
+
+    grid = ag_grid("tableau_grid", [])
+
+    assert getattr(grid, "className", None) in (None, "")