diff --git a/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs b/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs
index 60c7e8f..ef92af6 100644
--- a/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs
+++ b/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs
@@ -126,6 +126,12 @@ public partial class MainViewModel : ObservableObject
                         Command = SelectLocaleCommand,
                         CommandParameter = new CultureInfo("pl-pl")
                     },
+                    new MenuItemViewModel
+                    {
+                        Header = "Français",
+                        Command = SelectLocaleCommand,
+                        CommandParameter = new CultureInfo("fr-fr")
+                    },
                 ]
             }
         ];
@@ -191,4 +197,4 @@ public class MenuItemViewModel
     public ICommand? Command { get; set; }
     public object? CommandParameter { get; set; }
     public IList<MenuItemViewModel>? Items { get; set; }
-}
\ No newline at end of file
+}
diff --git a/src/Semi.Avalonia/Locale/_index.cs b/src/Semi.Avalonia/Locale/_index.cs
index f024267..4d3ac06 100644
--- a/src/Semi.Avalonia/Locale/_index.cs
+++ b/src/Semi.Avalonia/Locale/_index.cs
@@ -8,6 +8,8 @@ public class en_us : ResourceDictionary;
 
 public class es_es : ResourceDictionary;
 
+public class fr_fr : ResourceDictionary;
+
 public class ja_jp : ResourceDictionary;
 
 public class pl_pl : ResourceDictionary;
@@ -18,4 +20,4 @@ public class uk_ua : ResourceDictionary;
 
 public class zh_cn : ResourceDictionary;
 
-public class zh_tw : ResourceDictionary;
\ No newline at end of file
+public class zh_tw : ResourceDictionary;
diff --git a/src/Semi.Avalonia/Locale/fr-fr.axaml b/src/Semi.Avalonia/Locale/fr-fr.axaml
new file mode 100644
index 0000000..5a3b207
--- /dev/null
+++ b/src/Semi.Avalonia/Locale/fr-fr.axaml
@@ -0,0 +1,27 @@
+<ResourceDictionary
+    x:Class="Semi.Avalonia.Locale.fr_fr"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <!--  DatePicker  -->
+    <x:String x:Key="STRING_DATEPICKER_DAY_TEXT">Jour</x:String>
+    <x:String x:Key="STRING_DATEPICKER_MONTH_TEXT">Mois</x:String>
+    <x:String x:Key="STRING_DATEPICKER_YEAR_TEXT">Année</x:String>
+    <!--  TimePicker  -->
+    <x:String x:Key="STRING_TIMEPICKER_HOUR_TEXT">Heure</x:String>
+    <x:String x:Key="STRING_TIMEPICKER_MINUTE_TEXT">Minute</x:String>
+    <x:String x:Key="STRING_TIMEPICKER_SECOND_TEXT">Seconde</x:String>
+    <!-- TextBox/SelectableTextBox flyout -->
+    <x:String x:Key="STRING_MENU_CUT">Couper</x:String>
+    <x:String x:Key="STRING_MENU_COPY">Copier</x:String>
+    <x:String x:Key="STRING_MENU_PASTE">Coller</x:String>
+    <!--  ManagedFileChooser  -->
+    <x:String x:Key="STRING_CHOOSER_FILE_NAME">Nom du fichier</x:String>
+    <x:String x:Key="STRING_CHOOSER_SHOW_HIDDEN_FILES">Afficher les fichiers cachés</x:String>
+    <x:String x:Key="STRING_CHOOSER_DIALOG_OK">OK</x:String>
+    <x:String x:Key="STRING_CHOOSER_DIALOG_CANCEL">Annuler</x:String>
+    <x:String x:Key="STRING_CHOOSER_NAME_COLUMN">Nom</x:String>
+    <x:String x:Key="STRING_CHOOSER_DATEMODIFIED_COLUMN">Date de modification</x:String>
+    <x:String x:Key="STRING_CHOOSER_TYPE_COLUMN">Type</x:String>
+    <x:String x:Key="STRING_CHOOSER_SIZE_COLUMN">Taille</x:String>
+    <x:String x:Key="STRING_CHOOSER_PROMPT_FILE_ALREADY_EXISTS">{0} existe déjà. Voulez-vous le remplacer ?</x:String>
+</ResourceDictionary>
diff --git a/src/Semi.Avalonia/SemiTheme.axaml.cs b/src/Semi.Avalonia/SemiTheme.axaml.cs
index 416a4e5..cf7eee9 100644
--- a/src/Semi.Avalonia/SemiTheme.axaml.cs
+++ b/src/Semi.Avalonia/SemiTheme.axaml.cs
@@ -22,6 +22,7 @@ public class SemiTheme : Styles
         { new CultureInfo("de-de"), new de_de() },
         { new CultureInfo("es-es"), new es_es() },
         { new CultureInfo("pl-pl"), new pl_pl() },
+        { new CultureInfo("fr-fr"), new fr_fr() },
     };
 
     private static readonly ResourceDictionary _defaultResource = new zh_cn();
@@ -106,4 +107,4 @@ public class SemiTheme : Styles
             element.Resources[kv.Key] = kv.Value;
         }
     }
-}
\ No newline at end of file
+}