diff --git a/radiant/ui/modelselector/ModelDataInserter.h b/radiant/ui/modelselector/ModelDataInserter.h
index 8de7fc9863..d223e58518 100644
--- a/radiant/ui/modelselector/ModelDataInserter.h
+++ b/radiant/ui/modelselector/ModelDataInserter.h
@@ -18,8 +18,6 @@ namespace
 	const char* MODEL_ICON = "model16green.png";
 	const char* SKIN_ICON = "skin16.png";
 	const char* FOLDER_ICON = "folder16.png";
-
-	const char* MODELS_FOLDER = "models/";
 }
 
 /**
@@ -69,7 +67,7 @@ class ModelDataInserter :
 		std::string displayName = path.substr(path.rfind("/") + 1);
 
 		// Pathname is the model VFS name for a model, and blank for a folder
-		std::string fullPath = isExplicit ? (MODELS_FOLDER + path) : "";
+		std::string fullPath = isExplicit ? path : "";
 
         bool isFavourite = isExplicit && _favourites.count(fullPath) > 0;
 
diff --git a/radiant/ui/modelselector/ModelPopulator.h b/radiant/ui/modelselector/ModelPopulator.h
index 74fa68bb21..da051256b0 100644
--- a/radiant/ui/modelselector/ModelPopulator.h
+++ b/radiant/ui/modelselector/ModelPopulator.h
@@ -7,6 +7,7 @@
 #include "EventRateLimiter.h"
 
 #include "ifilesystem.h"
+#include "ieclass.h"
 #include "i18n.h"
 #include "string/string.h"
 #include "os/path.h"
@@ -63,6 +64,7 @@ class ModelPopulator final :
     void PopulateModel(const wxutil::TreeModel::Ptr& model) override
     {
         wxutil::VFSTreePopulator populator(model);
+        constexpr const char* MODELS_FOLDER = "models/";
 
         // Search for model files
         GlobalFileSystem().forEachFile(
@@ -72,7 +74,7 @@ class ModelPopulator final :
                 // Only add visible models
                 if (fileInfo.visibility == vfs::Visibility::NORMAL)
                 {
-                    visitModelFile(fileInfo.name, populator);
+                    visitModelFile(MODELS_FOLDER + fileInfo.name, populator);
                 }
             },
             0
@@ -80,11 +82,39 @@ class ModelPopulator final :
 
         ThrowIfCancellationRequested();
 
+        // Model Defs Folder
+        wxIcon folderIcon;
+        folderIcon.CopyFromBitmap(wxArtProvider::GetBitmap(GlobalUIManager().ArtIdPrefix() + FOLDER_ICON));
+
         reportProgress(_("Building tree..."));
 
         // Fill in the column data (TRUE = including skins)
         ModelDataInserter inserterSkins(_columns, true);
         populator.forEachNode(inserterSkins);
+
+        reportProgress(_("Adding Model Definitions..."));
+
+        // Model Defs
+        wxutil::TreeModel::Row modelDefs(model->AddItem());
+        modelDefs[_columns.iconAndName] = wxVariant(wxDataViewIconText(_("Model Definitions"), folderIcon));
+        modelDefs[_columns.fullName] = _("Model Definitions");
+        modelDefs[_columns.modelPath] = "";
+        modelDefs[_columns.leafName] = _("Model Definitions");
+        modelDefs[_columns.skin] = std::string();
+        modelDefs[_columns.isSkin] = false;
+        modelDefs[_columns.isFolder] = true;
+        modelDefs[_columns.isFavourite] = false;
+        modelDefs.SendItemAdded();
+
+        wxutil::VFSTreePopulator modelDefPopulator(model, modelDefs.getItem());
+
+        GlobalEntityClassManager().forEachModelDef([&](const IModelDefPtr& def)
+        {
+            ThrowIfCancellationRequested();
+            modelDefPopulator.addPath(def->name);
+        });
+
+        modelDefPopulator.forEachNode(inserterSkins);
     }
 
     void SortModel(const wxutil::TreeModel::Ptr& model) override