diff --git a/TopModel.Core/schema.tmdgen.config.json b/TopModel.Core/schema.tmdgen.config.json
index f3728032..938889d2 100644
--- a/TopModel.Core/schema.tmdgen.config.json
+++ b/TopModel.Core/schema.tmdgen.config.json
@@ -247,6 +247,10 @@
           "preservePropertyCasing": {
             "type": "boolean",
             "description": "Garde les noms des propriétés générées tels quels pour la génération via `modgen`, au lieu de les convertir dans le format du langage cible. Par défaut : `true`."
+          },
+          "classPrefix": {
+            "type": "string",
+            "description": "Préfixe à ajouter à toutes les classes générées pour cette source."
           }
         }
       }
diff --git a/TopModel.ModelGenerator/OpenApi/OpenApiTmdGenerator.cs b/TopModel.ModelGenerator/OpenApi/OpenApiTmdGenerator.cs
index ec478d3a..9d41c0df 100644
--- a/TopModel.ModelGenerator/OpenApi/OpenApiTmdGenerator.cs
+++ b/TopModel.ModelGenerator/OpenApi/OpenApiTmdGenerator.cs
@@ -80,7 +80,7 @@ protected override async IAsyncEnumerable<string> GenerateCore()
 
             var className = schema.Value.Type == "array" ? schema.Key.Unplurialize() : schema.Key;
 
-            fw.WriteLine($"  name: {className}");
+            fw.WriteLine($"  name: {_config.ClassPrefix}{className}");
 
             if (_config.PreservePropertyCasing)
             {
@@ -110,7 +110,7 @@ protected override async IAsyncEnumerable<string> GenerateCore()
                 else
                 {
                     fw.WriteLine("    - alias:");
-                    fw.WriteLine($@"        class: {schema.Key.ToPascalCase()}{property.Key.ToPascalCase()}");
+                    fw.WriteLine($@"        class: {_config.ClassPrefix}{schema.Key.ToPascalCase()}{property.Key.ToPascalCase()}");
                     fw.WriteLine($"      name: {property.Key.ToPascalCase()}");
                 }
 
@@ -124,7 +124,7 @@ protected override async IAsyncEnumerable<string> GenerateCore()
             {
                 fw.WriteLine("---");
                 fw.WriteLine("class:");
-                fw.WriteLine($"  name: {schema.Key.ToPascalCase()}{property.Key.ToPascalCase()}");
+                fw.WriteLine($"  name: {_config.ClassPrefix}{schema.Key.ToPascalCase()}{property.Key.ToPascalCase()}");
 
                 if (_config.PreservePropertyCasing)
                 {
@@ -414,7 +414,7 @@ private void WriteProperty(OpenApiConfig config, FileWriter sw, KeyValuePair<str
         if (kind != null && name != null)
         {
             var domainKind = TmdGenUtils.GetDomainString(config.Domains, type: kind);
-            sw.WriteLine($"    {(noList ? string.Empty : "- ")}composition: {name}");
+            sw.WriteLine($"    {(noList ? string.Empty : "- ")}composition: {_config.ClassPrefix}{name}");
             sw.WriteLine($"    {(noList ? string.Empty : "  ")}name: {property.Key}");
             if (kind != "object")
             {
diff --git a/TopModel.ModelGenerator/OpenApi/config/OpenApiConfig.cs b/TopModel.ModelGenerator/OpenApi/config/OpenApiConfig.cs
index 5f19e1e5..fd824cd0 100644
--- a/TopModel.ModelGenerator/OpenApi/config/OpenApiConfig.cs
+++ b/TopModel.ModelGenerator/OpenApi/config/OpenApiConfig.cs
@@ -23,4 +23,6 @@ public class OpenApiConfig
     public string ModelFileName { get; set; } = "Model";
 
     public bool PreservePropertyCasing { get; set; } = true;
+
+    public string? ClassPrefix { get; set; }
 }