diff --git a/packages/primevue/src/treeselect/BaseTreeSelect.vue b/packages/primevue/src/treeselect/BaseTreeSelect.vue
index 0ed012ce8..f4205c3b3 100644
--- a/packages/primevue/src/treeselect/BaseTreeSelect.vue
+++ b/packages/primevue/src/treeselect/BaseTreeSelect.vue
@@ -56,6 +56,26 @@ export default {
             type: Boolean,
             default: null
         },
+        filter: {
+            type: Boolean,
+            default: false
+        },
+        filterBy: {
+            type: [String, Function],
+            default: 'label'
+        },
+        filterMode: {
+            type: String,
+            default: 'lenient'
+        },
+        filterPlaceholder: {
+            type: String,
+            default: null
+        },
+        filterLocale: {
+            type: String,
+            default: undefined
+        },
         inputId: {
             type: String,
             default: null
diff --git a/packages/primevue/src/treeselect/TreeSelect.d.ts b/packages/primevue/src/treeselect/TreeSelect.d.ts
index 1455fb5ca..9b7124b0d 100644
--- a/packages/primevue/src/treeselect/TreeSelect.d.ts
+++ b/packages/primevue/src/treeselect/TreeSelect.d.ts
@@ -209,10 +209,6 @@ export interface TreeSelectProps {
      * @defaultValue null
      */
     fluid?: boolean | undefined;
-    /**
-     * Style class of the overlay panel.
-     */
-    panelClass?: any;
     /**
      * A valid query selector or an HTMLElement to specify where the overlay gets attached.
      * @defaultValue body
@@ -234,6 +230,29 @@ export interface TreeSelectProps {
      * @defaultValue false
      */
     metaKeySelection?: boolean | undefined;
+    /**
+     * When specified, displays an input field to filter the items.
+     * @defaultValue false
+     */
+    filter?: boolean | undefined;
+    /**
+     * When filtering is enabled, filterBy decides which field or fields (comma separated) to search against. A callable taking a TreeNode can be provided instead of a list of field names.
+     * @defaultValue label
+     */
+    filterBy?: string | ((node: TreeNode) => string) | undefined;
+    /**
+     * Mode for filtering.
+     * @defaultValue lenient
+     */
+    filterMode?: 'lenient' | 'strict' | undefined;
+    /**
+     * Placeholder text to show when filter input is empty.
+     */
+    filterPlaceholder?: string | undefined;
+    /**
+     * Locale to use in filtering. The default locale is the host environment's current locale.
+     */
+    filterLocale?: string | undefined;
     /**
      * 	Identifier of the underlying input element.
      */
@@ -250,6 +269,10 @@ export interface TreeSelectProps {
      * Used to pass all properties of the HTMLInputElement to the focusable input element inside the component.
      */
     inputProps?: InputHTMLAttributes | undefined;
+    /**
+     * Style class of the overlay panel.
+     */
+    panelClass?: any;
     /**
      * Establishes relationships between the component and label(s) where its value should be one or more element IDs.
      */
diff --git a/packages/primevue/src/treeselect/TreeSelect.vue b/packages/primevue/src/treeselect/TreeSelect.vue
index 5b6b139c0..e7c75fc5f 100644
--- a/packages/primevue/src/treeselect/TreeSelect.vue
+++ b/packages/primevue/src/treeselect/TreeSelect.vue
@@ -64,6 +64,11 @@
                             :id="listId"
                             :value="options"
                             :selectionMode="selectionMode"
+                            :filter="filter"
+                            :filterBy="filterBy"
+                            :filterMode="filterMode"
+                            :filterPlaceholder="filterPlaceholder"
+                            :filterLocale="filterLocale"
                             @update:selectionKeys="onSelectionChange"
                             :selectionKeys="modelValue"
                             :expandedKeys="expandedKeys"