diff --git a/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs b/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs
index 307554b..609dc04 100644
--- a/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs
+++ b/demo/Semi.Avalonia.Demo/Views/MainView.axaml.cs
@@ -114,6 +114,12 @@ public partial class MainViewModel : ObservableObject
                         Command = SelectLocaleCommand,
                         CommandParameter = new CultureInfo("de-de")
                     },
+                    new MenuItemViewModel
+                    {
+                        Header = "Español",
+                        Command = SelectLocaleCommand,
+                        CommandParameter = new CultureInfo("es-es")
+                    },
                 ]
             }
         ];
diff --git a/src/Semi.Avalonia/Locale/es-es.axaml b/src/Semi.Avalonia/Locale/es-es.axaml
new file mode 100644
index 0000000..16367f7
--- /dev/null
+++ b/src/Semi.Avalonia/Locale/es-es.axaml
@@ -0,0 +1,27 @@
+<ResourceDictionary
+    x:Class="Semi.Avalonia.Locale.es_es"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <!--  DatePicker  -->
+    <x:String x:Key="STRING_DATEPICKER_DAY_TEXT">dia</x:String>
+    <x:String x:Key="STRING_DATEPICKER_MONTH_TEXT">mes</x:String>
+    <x:String x:Key="STRING_DATEPICKER_YEAR_TEXT">año</x:String>
+    <!--  TimePicker  -->
+    <x:String x:Key="STRING_TIMEPICKER_HOUR_TEXT">hora</x:String>
+    <x:String x:Key="STRING_TIMEPICKER_MINUTE_TEXT">minuto</x:String>
+    <x:String x:Key="STRING_TIMEPICKER_SECOND_TEXT">segundo</x:String>
+    <!-- TextBox/SelectableTextBox flyout -->
+    <x:String x:Key="STRING_MENU_CUT">Cortar</x:String>
+    <x:String x:Key="STRING_MENU_COPY">Copiar</x:String>
+    <x:String x:Key="STRING_MENU_PASTE">Pegar</x:String>
+    <!--  ManagedFileChooser  -->
+    <x:String x:Key="STRING_CHOOSER_FILE_NAME">Nombre de fichero</x:String>
+    <x:String x:Key="STRING_CHOOSER_SHOW_HIDDEN_FILES">Mostrar ficheros ocultos</x:String>
+    <x:String x:Key="STRING_CHOOSER_DIALOG_OK">OK</x:String>
+    <x:String x:Key="STRING_CHOOSER_DIALOG_CANCEL">Cancelar</x:String>
+    <x:String x:Key="STRING_CHOOSER_NAME_COLUMN">Nombre</x:String>
+    <x:String x:Key="STRING_CHOOSER_DATEMODIFIED_COLUMN">Fecha modificada</x:String>
+    <x:String x:Key="STRING_CHOOSER_TYPE_COLUMN">Tipo</x:String>
+    <x:String x:Key="STRING_CHOOSER_SIZE_COLUMN">Tamaño</x:String>
+    <x:String x:Key="STRING_CHOOSER_PROMPT_FILE_ALREADY_EXISTS">{0} ya existe. Quieres reemplazarlo?</x:String>
+</ResourceDictionary>
\ No newline at end of file
diff --git a/src/Semi.Avalonia/Locale/es-es.axaml.cs b/src/Semi.Avalonia/Locale/es-es.axaml.cs
new file mode 100644
index 0000000..0f4284d
--- /dev/null
+++ b/src/Semi.Avalonia/Locale/es-es.axaml.cs
@@ -0,0 +1,8 @@
+using Avalonia.Controls;
+
+namespace Semi.Avalonia.Locale;
+
+public class es_es: ResourceDictionary
+{
+    
+}
\ No newline at end of file
diff --git a/src/Semi.Avalonia/SemiTheme.axaml.cs b/src/Semi.Avalonia/SemiTheme.axaml.cs
index 1147048..4c9e98a 100644
--- a/src/Semi.Avalonia/SemiTheme.axaml.cs
+++ b/src/Semi.Avalonia/SemiTheme.axaml.cs
@@ -20,6 +20,7 @@ public class SemiTheme : Styles
         { new CultureInfo("ru-ru"), new ru_ru() },
         { new CultureInfo("zh-tw"), new zh_tw() },
         { new CultureInfo("de-de"), new de_de() },
+        { new CultureInfo("es-es"), new es_es() },
     };
 
     private static readonly ResourceDictionary _defaultResource = new zh_cn();