diff --git a/api-generator/components/tree.js b/api-generator/components/tree.js
index 433d4f39b..ddb7ddf4f 100644
--- a/api-generator/components/tree.js
+++ b/api-generator/components/tree.js
@@ -77,6 +77,12 @@ const TreeProps = [
         type: 'string',
         default: 'null',
         description: 'Height of the scroll viewport in fixed units or the "flex" keyword for a dynamic size.'
+    },
+    {
+        name: 'pt',
+        type: 'any',
+        default: 'null',
+        description: 'Uses to pass attributes to DOM elements inside the component.'
     }
 ];
 
diff --git a/components/lib/config/PrimeVue.d.ts b/components/lib/config/PrimeVue.d.ts
index f5ca10192..4d487458d 100644
--- a/components/lib/config/PrimeVue.d.ts
+++ b/components/lib/config/PrimeVue.d.ts
@@ -63,6 +63,7 @@ import { TextareaPassThroughOptions } from '../textarea';
 import { TieredMenuPassThroughOptions } from '../tieredmenu';
 import { ToastPassThroughOptions } from '../toast';
 import { ToolbarPassThroughOptions } from '../toolbar';
+import { TreePassThroughOptions } from '../tree';
 import { VirtualScrollerPassThroughOptions } from '../virtualscroller';
 
 interface PrimeVueConfiguration {
@@ -148,6 +149,7 @@ interface PrimeVuePTOptions {
     tieredmenu?: TieredMenuPassThroughOptions;
     toast?: ToastPassThroughOptions;
     toolbar?: ToolbarPassThroughOptions;
+    tree?: TreePassThroughOptions;
     virtualscroller?: VirtualScrollerPassThroughOptions;
 }
 
diff --git a/components/lib/tree/Tree.d.ts b/components/lib/tree/Tree.d.ts
index 621d1b6a1..e3ecda194 100755
--- a/components/lib/tree/Tree.d.ts
+++ b/components/lib/tree/Tree.d.ts
@@ -10,6 +10,16 @@
 import { VNode } from 'vue';
 import { ClassComponent, GlobalComponentConstructor } from '../ts-helpers';
 
+export declare type TreePassThroughOptionType = TreePassThroughAttributes | ((options: TreePassThroughMethodOptions) => TreePassThroughAttributes) | null | undefined;
+
+/**
+ * Custom passthrough(pt) option method.
+ */
+export interface TreePassThroughMethodOptions {
+    props: TreeProps;
+    state: TreeState;
+}
+
 /**
  * Custom TreeNode metadata.
  */
@@ -90,6 +100,106 @@ export interface TreeSelectionKeys {
     [key: string]: any;
 }
 
+/**
+ * Custom passthrough(pt) options.
+ * @see {@link TreeProps.pt}
+ */
+export interface TreePassThroughOptions {
+    /**
+     * Uses to pass attributes to the root's DOM element.
+     */
+    root?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the loading overlay's DOM element.
+     */
+    loadingOverlay?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the loading icon's DOM element.
+     */
+    loadingIcon?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the filter container's DOM element.
+     */
+    filterContainer?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the input's DOM element.
+     */
+    input?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the search icon's DOM element.
+     */
+    searchIcon?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the wrapper's DOM element.
+     */
+    wrapper?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the container's DOM element.
+     */
+    container?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the node's DOM element.
+     */
+    node?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the content's DOM element.
+     */
+    content?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the toggler's DOM element.
+     */
+    toggler?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the toggler icon's DOM element.
+     */
+    togglerIcon?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the checkbox container's DOM element.
+     */
+    checkboxContainer?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the checkbox's DOM element.
+     */
+    checkbox?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the checkbox icon's DOM element.
+     */
+    checkboxIcon?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the node icon's DOM element.
+     */
+    nodeIcon?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the label's DOM element.
+     */
+    label?: TreePassThroughOptionType;
+    /**
+     * Uses to pass attributes to the subgroup's DOM element.
+     */
+    subgroup?: TreePassThroughOptionType;
+}
+
+/**
+ * Custom passthrough attributes for each DOM elements
+ */
+export interface TreePassThroughAttributes {
+    [key: string]: any;
+}
+
+/**
+ * Defines current inline state in Tree component.
+ */
+export interface TreeState {
+    /**
+     * Current expanded keys state.
+     */
+    d_expandedKeys: TreeExpandedKeys;
+    /**
+     * Current filter value state as a string.
+     */
+    filterValue: string;
+}
+
 /**
  * Defines valid properties in Tree component.
  */
@@ -161,6 +271,11 @@ export interface TreeProps {
      * Identifier of the underlying menu element.
      */
     'aria-labelledby'?: string | undefined;
+    /**
+     * Uses to pass attributes to DOM elements inside the component.
+     * @type {TreePassThroughOptions}
+     */
+    pt?: TreePassThroughOptions;
 }
 
 /**
diff --git a/components/lib/tree/Tree.vue b/components/lib/tree/Tree.vue
index 3ffebfb9c..2e38a789a 100755
--- a/components/lib/tree/Tree.vue
+++ b/components/lib/tree/Tree.vue
@@ -1,21 +1,21 @@
 <template>
-    <div :class="containerClass">
+    <div :class="containerClass" v-bind="ptm('root')">
         <template v-if="loading">
-            <div class="p-tree-loading-overlay p-component-overlay">
+            <div class="p-tree-loading-overlay p-component-overlay" v-bind="ptm('loadingOverlay')">
                 <slot name="loadingicon">
-                    <i v-if="loadingIcon" :class="['p-tree-loading-icon pi-spin', loadingIcon]" />
-                    <SpinnerIcon v-else spin class="p-tree-loading-icon" />
+                    <i v-if="loadingIcon" :class="['p-tree-loading-icon pi-spin', loadingIcon]" v-bind="ptm('loadingIcon')" />
+                    <SpinnerIcon v-else spin class="p-tree-loading-icon" v-bind="ptm('loadingIcon')" />
                 </slot>
             </div>
         </template>
-        <div v-if="filter" class="p-tree-filter-container">
-            <input v-model="filterValue" type="text" autocomplete="off" class="p-tree-filter p-inputtext p-component" :placeholder="filterPlaceholder" @keydown="onFilterKeydown" />
+        <div v-if="filter" class="p-tree-filter-container" v-bind="ptm('filterContainer')">
+            <input v-model="filterValue" type="text" autocomplete="off" class="p-tree-filter p-inputtext p-component" :placeholder="filterPlaceholder" @keydown="onFilterKeydown" v-bind="ptm('input')" />
             <slot name="searchicon">
-                <SearchIcon class="p-tree-filter-icon" />
+                <SearchIcon class="p-tree-filter-icon" v-bind="ptm('searchIcon')" />
             </slot>
         </div>
-        <div class="p-tree-wrapper" :style="{ maxHeight: scrollHeight }">
-            <ul class="p-tree-container" role="tree" :aria-labelledby="ariaLabelledby" :aria-label="ariaLabel">
+        <div class="p-tree-wrapper" :style="{ maxHeight: scrollHeight }" v-bind="ptm('wrapper')">
+            <ul class="p-tree-container" role="tree" :aria-labelledby="ariaLabelledby" :aria-label="ariaLabel" v-bind="ptm('container')">
                 <TreeNode
                     v-for="(node, index) of valueToRender"
                     :key="node.key"
@@ -29,6 +29,7 @@
                     :selectionMode="selectionMode"
                     :selectionKeys="selectionKeys"
                     @checkbox-change="onCheckboxChange"
+                    :pt="pt"
                 ></TreeNode>
             </ul>
         </div>
@@ -36,6 +37,7 @@
 </template>
 
 <script>
+import BaseComponent from 'primevue/basecomponent';
 import SearchIcon from 'primevue/icons/search';
 import SpinnerIcon from 'primevue/icons/spinner';
 import { ObjectUtils } from 'primevue/utils';
@@ -43,6 +45,7 @@ import TreeNode from './TreeNode.vue';
 
 export default {
     name: 'Tree',
+    extends: BaseComponent,
     emits: ['node-expand', 'node-collapse', 'update:expandedKeys', 'update:selectionKeys', 'node-select', 'node-unselect'],
     props: {
         value: {
diff --git a/components/lib/tree/TreeNode.vue b/components/lib/tree/TreeNode.vue
index 5ae415eb5..acc95739f 100755
--- a/components/lib/tree/TreeNode.vue
+++ b/components/lib/tree/TreeNode.vue
@@ -12,26 +12,27 @@
         :aria-checked="ariaChecked"
         :tabindex="index === 0 ? 0 : -1"
         @keydown="onKeyDown"
+        v-bind="getPTOptions('node')"
     >
-        <div :class="contentClass" @click="onClick" @touchend="onTouchEnd" :style="node.style">
-            <button v-ripple type="button" class="p-tree-toggler p-link" @click="toggle" tabindex="-1" aria-hidden="true">
+        <div :class="contentClass" @click="onClick" @touchend="onTouchEnd" :style="node.style" v-bind="getPTOptions('content')">
+            <button v-ripple type="button" class="p-tree-toggler p-link" @click="toggle" tabindex="-1" aria-hidden="true" v-bind="getPTOptions('toggler')">
                 <component v-if="templates['togglericon']" :is="templates['togglericon']" :node="node" :expanded="expanded" class="p-tree-toggler-icon" />
-                <component v-else-if="expanded" :is="node.expandedIcon ? 'span' : 'ChevronDownIcon'" class="p-tree-toggler-icon" />
-                <component v-else :is="node.collapsedIcon ? 'span' : 'ChevronRightIcon'" class="p-tree-toggler-icon" />
+                <component v-else-if="expanded" :is="node.expandedIcon ? 'span' : 'ChevronDownIcon'" class="p-tree-toggler-icon" v-bind="getPTOptions('togglerIcon')" />
+                <component v-else :is="node.collapsedIcon ? 'span' : 'ChevronRightIcon'" class="p-tree-toggler-icon" v-bind="getPTOptions('togglerIcon')" />
             </button>
-            <div v-if="checkboxMode" class="p-checkbox p-component" aria-hidden="true">
-                <div :class="checkboxClass" role="checkbox">
+            <div v-if="checkboxMode" class="p-checkbox p-component" aria-hidden="true" v-bind="getPTOptions('checkboxContainer')">
+                <div :class="checkboxClass" role="checkbox" v-bind="getPTOptions('checkbox')">
                     <component v-if="templates['checkboxicon']" :is="templates['checkboxicon']" :checked="checked" :partialChecked="partialChecked" class="p-checkbox-icon" />
-                    <component v-else :is="checked ? 'CheckIcon' : partialChecked ? 'MinusIcon' : null" class="p-checkbox-icon" />
+                    <component v-else :is="checked ? 'CheckIcon' : partialChecked ? 'MinusIcon' : null" class="p-checkbox-icon" v-bind="getPTOptions('checkboxIcon')" />
                 </div>
             </div>
-            <span :class="icon"></span>
-            <span class="p-treenode-label">
+            <span :class="icon" v-bind="getPTOptions('nodeIcon')"></span>
+            <span class="p-treenode-label" v-bind="getPTOptions('label')">
                 <component v-if="templates[node.type] || templates['default']" :is="templates[node.type] || templates['default']" :node="node" />
                 <template v-else>{{ label(node) }}</template>
             </span>
         </div>
-        <ul v-if="hasChildren && expanded" class="p-treenode-children" role="group">
+        <ul v-if="hasChildren && expanded" class="p-treenode-children" role="group" v-bind="ptm('subgroup')">
             <TreeNode
                 v-for="childNode of node.children"
                 :key="childNode.key"
@@ -44,12 +45,14 @@
                 :selectionMode="selectionMode"
                 :selectionKeys="selectionKeys"
                 @checkbox-change="propagateUp"
+                :pt="pt"
             />
         </ul>
     </li>
 </template>
 
 <script>
+import BaseComponent from 'primevue/basecomponent';
 import CheckIcon from 'primevue/icons/check';
 import ChevronDownIcon from 'primevue/icons/chevrondown';
 import ChevronRightIcon from 'primevue/icons/chevronright';
@@ -59,6 +62,7 @@ import { DomHandler } from 'primevue/utils';
 
 export default {
     name: 'TreeNode',
+    extends: BaseComponent,
     emits: ['node-toggle', 'node-click', 'checkbox-change'],
     props: {
         node: {
@@ -110,6 +114,15 @@ export default {
         onChildNodeToggle(node) {
             this.$emit('node-toggle', node);
         },
+        getPTOptions(key) {
+            return this.ptm(key, {
+                context: {
+                    expanded: this.expanded,
+                    selected: this.selected,
+                    checked: this.checked
+                }
+            });
+        },
         onClick(event) {
             if (this.toggleClicked || DomHandler.hasClass(event.target, 'p-tree-toggler') || DomHandler.hasClass(event.target.parentElement, 'p-tree-toggler')) {
                 this.toggleClicked = false;