diff --git a/api-generator/components/overlaypanel.js b/api-generator/components/overlaypanel.js
index 3cdf363223..f2861c06b3 100644
--- a/api-generator/components/overlaypanel.js
+++ b/api-generator/components/overlaypanel.js
@@ -46,6 +46,12 @@ const OverlayPanelProps = [
         type: 'string',
         default: 'undefined',
         description: 'Display a custom close icon for the message.'
+    },
+    {
+        name: 'pt',
+        type: 'any',
+        default: 'null',
+        description: 'Uses to pass attributes to DOM elements inside the component.'
     }
 ];
 
diff --git a/components/lib/overlaypanel/OverlayPanel.d.ts b/components/lib/overlaypanel/OverlayPanel.d.ts
index 247bdf7751..4a1a4a65a7 100755
--- a/components/lib/overlaypanel/OverlayPanel.d.ts
+++ b/components/lib/overlaypanel/OverlayPanel.d.ts
@@ -10,6 +10,57 @@
 import { VNode } from 'vue';
 import { ClassComponent, GlobalComponentConstructor } from '../ts-helpers';
 
+export declare type OverlayPanelPassThroughOptionType = OverlayPanelPassThroughAttributes | ((options: OverlayPanelPassThroughMethodOptions) => OverlayPanelPassThroughAttributes) | null | undefined;
+
+/**
+ * Custom passthrough(pt) option method.
+ */
+export interface OverlayPanelPassThroughMethodOptions {
+    props: OverlayPanelProps;
+    state: OverlayPanelState;
+}
+
+/**
+ * Custom passthrough(pt) options.
+ * @see {@link OverlayPanelProps.pt}
+ */
+export interface OverlayPanelPassThroughOptions {
+    /**
+     * Uses to pass attributes to the root's DOM element.
+     */
+    root?: OverlayPanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the content's DOM element.
+     */
+    content?: OverlayPanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the close button's DOM element.
+     */
+    closeButton?: OverlayPanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the close icon's DOM element.
+     */
+    closeIcon?: OverlayPanelPassThroughOptionType;
+}
+
+/**
+ * Custom passthrough attributes for each DOM elements
+ */
+export interface OverlayPanelPassThroughAttributes {
+    [key: string]: any;
+}
+
+/**
+ * Defines current inline state in OverlayPanel component.
+ */
+export interface OverlayPanelState {
+    /**
+     * Current visible state as a boolean.
+     * @defaultValue false
+     */
+    visible: boolean;
+}
+
 /**
  * OverlayPanel breakpoint metadata.
  */
@@ -70,6 +121,11 @@ export interface OverlayPanelProps {
      * @deprecated since v3.27.0. Use 'closeicon' slot.
      */
     closeIcon?: string | undefined;
+    /**
+     * Uses to pass attributes to DOM elements inside the component.
+     * @type {OverlayPanelPassThroughOptions}
+     */
+    pt?: OverlayPanelPassThroughOptions;
 }
 
 /**
diff --git a/components/lib/overlaypanel/OverlayPanel.vue b/components/lib/overlaypanel/OverlayPanel.vue
index 12cd78cf71..7bc3cf126a 100755
--- a/components/lib/overlaypanel/OverlayPanel.vue
+++ b/components/lib/overlaypanel/OverlayPanel.vue
@@ -1,13 +1,13 @@
 <template>
     <Portal :appendTo="appendTo">
         <transition name="p-overlaypanel" @enter="onEnter" @leave="onLeave" @after-leave="onAfterLeave">
-            <div v-if="visible" :ref="containerRef" v-focustrap role="dialog" :class="containerClass" :aria-modal="visible" @click="onOverlayClick" v-bind="$attrs">
-                <div class="p-overlaypanel-content" @click="onContentClick" @mousedown="onContentClick" @keydown="onContentKeydown">
+            <div v-if="visible" :ref="containerRef" v-focustrap role="dialog" :class="containerClass" :aria-modal="visible" @click="onOverlayClick" v-bind="{ ...$attrs, ...ptm('root') }">
+                <div class="p-overlaypanel-content" @click="onContentClick" @mousedown="onContentClick" @keydown="onContentKeydown" v-bind="ptm('content')">
                     <slot></slot>
                 </div>
-                <button v-if="showCloseIcon" v-ripple class="p-overlaypanel-close p-link" :aria-label="closeAriaLabel" type="button" autofocus @click="hide" @keydown="onButtonKeydown">
+                <button v-if="showCloseIcon" v-ripple class="p-overlaypanel-close p-link" :aria-label="closeAriaLabel" type="button" autofocus @click="hide" @keydown="onButtonKeydown" v-bind="ptm('closeButton')">
                     <slot name="closeicon">
-                        <component :is="closeIcon ? 'span' : 'TimesIcon'" :class="['p-overlaypanel-close-icon ', closeIcon]"></component>
+                        <component :is="closeIcon ? 'span' : 'TimesIcon'" :class="['p-overlaypanel-close-icon ', closeIcon]" v-bind="ptm('closeIcon')"></component>
                     </slot>
                 </button>
             </div>
@@ -16,6 +16,7 @@
 </template>
 
 <script>
+import BaseComponent from 'primevue/basecomponent';
 import FocusTrap from 'primevue/focustrap';
 import TimesIcon from 'primevue/icons/times';
 import OverlayEventBus from 'primevue/overlayeventbus';
@@ -25,6 +26,7 @@ import { ConnectedOverlayScrollHandler, DomHandler, UniqueComponentId, ZIndexUti
 
 export default {
     name: 'OverlayPanel',
+    extends: BaseComponent,
     inheritAttrs: false,
     emits: ['show', 'hide'],
     props: {