diff --git a/api-generator/components/button.js b/api-generator/components/button.js
index cc17ea7d34..5653509387 100644
--- a/api-generator/components/button.js
+++ b/api-generator/components/button.js
@@ -94,6 +94,12 @@ const ButtonProps = [
         type: 'boolean',
         default: 'false',
         description: 'Add a plain textual class to the button without a background initially.'
+    },
+    {
+        name: 'pt',
+        type: 'any',
+        default: 'null',
+        description: 'Uses to pass attributes to DOM elements inside the component.'
     }
 ];
 
diff --git a/components/lib/button/Button.d.ts b/components/lib/button/Button.d.ts
index 7d85f2b53b..f6955bb85e 100755
--- a/components/lib/button/Button.d.ts
+++ b/components/lib/button/Button.d.ts
@@ -10,6 +10,49 @@
 import { ButtonHTMLAttributes, VNode } from 'vue';
 import { ClassComponent, GlobalComponentConstructor } from '../ts-helpers';
 
+export declare type ButtonPassThroughOptionType = ButtonPassThroughAttributes | ((options: ButtonPassThroughMethodOptions) => ButtonPassThroughAttributes) | null | undefined;
+
+/**
+ * Custom passthrough(pt) option method.
+ */
+export interface ButtonPassThroughMethodOptions {
+    props: ButtonProps;
+}
+
+/**
+ * Custom passthrough(pt) options.
+ * @see {@link ButtonProps.pt}
+ */
+export interface ButtonPassThroughOptions {
+    /**
+     * Uses to pass attributes to the root's DOM element.
+     */
+    root?: ButtonPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the loading icon's DOM element.
+     */
+    loadingIcon?: ButtonPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the icon's DOM element.
+     */
+    icon?: ButtonPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the label's DOM element.
+     */
+    label?: ButtonPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the badge's DOM element.
+     */
+    badge?: ButtonPassThroughOptionType;
+}
+
+/**
+ * Custom passthrough attributes for each DOM elements
+ */
+export interface ButtonPassThroughAttributes {
+    [key: string]: any;
+}
+
 /**
  * Defines valid properties in Button component.
  */
@@ -94,6 +137,11 @@ export interface ButtonProps extends ButtonHTMLAttributes {
      * @defaultValue false
      */
     plain?: boolean | undefined;
+    /**
+     * Uses to pass attributes to DOM elements inside the component.
+     * @type {ButtonPassThroughOptions}
+     */
+    pt?: ButtonPassThroughOptions;
 }
 
 /**
diff --git a/components/lib/button/Button.vue b/components/lib/button/Button.vue
index 027b91ab07..03f69a80f4 100755
--- a/components/lib/button/Button.vue
+++ b/components/lib/button/Button.vue
@@ -1,26 +1,28 @@
 <template>
-    <button v-ripple :class="buttonClass" type="button" :aria-label="defaultAriaLabel" :disabled="disabled">
+    <button v-ripple :class="buttonClass" type="button" :aria-label="defaultAriaLabel" :disabled="disabled" v-bind="ptm('root')">
         <slot></slot>
         <template v-if="!$slots.default">
             <slot v-if="loading" name="loadingicon" :class="loadingIconStyleClass">
-                <span v-if="loadingIcon" :class="[loadingIconStyleClass, loadingIcon]" />
-                <SpinnerIcon v-else :class="loadingIconStyleClass" spin />
+                <span v-if="loadingIcon" :class="[loadingIconStyleClass, loadingIcon]" v-bind="ptm('loadingIcon')" />
+                <SpinnerIcon v-else :class="loadingIconStyleClass" spin v-bind="ptm('loadingIcon')" />
             </slot>
             <slot v-else name="icon" :class="iconStyleClass">
-                <span v-if="icon" :class="[iconStyleClass, icon]"></span>
+                <span v-if="icon" :class="[iconStyleClass, icon]" v-bind="ptm('icon')"></span>
             </slot>
-            <span class="p-button-label">{{ label || '&nbsp;' }}</span>
-            <span v-if="badge" :class="badgeStyleClass">{{ badge }}</span>
+            <span class="p-button-label" v-bind="ptm('label')">{{ label || '&nbsp;' }}</span>
+            <span v-if="badge" :class="badgeStyleClass" v-bind="ptm('badge')">{{ badge }}</span>
         </template>
     </button>
 </template>
 
 <script>
+import BaseComponent from 'primevue/basecomponent';
 import SpinnerIcon from 'primevue/icons/spinner';
 import Ripple from 'primevue/ripple';
 
 export default {
     name: 'Button',
+    extends: BaseComponent,
     props: {
         label: {
             type: String,