diff --git a/src/framework/theme/components/chat/_chat.component.theme.scss b/src/framework/theme/components/chat/_chat.component.theme.scss
index feed35ffa8..1a8e4b3d06 100644
--- a/src/framework/theme/components/chat/_chat.component.theme.scss
+++ b/src/framework/theme/components/chat/_chat.component.theme.scss
@@ -266,10 +266,15 @@
       flex-direction: row;
       display: flex;
     }
-
-    input {
+    textarea {
+      resize: none;
+      max-height: 15em;
+      height: auto;
+      overflow-y: auto;
+    }
+    input,
+    textarea {
       flex: 1;
-
       &.with-button {
         border-bottom-right-radius: 0;
         border-top-right-radius: 0;
diff --git a/src/framework/theme/components/chat/chat-form.component.ts b/src/framework/theme/components/chat/chat-form.component.ts
index 3d1983b0b7..b482675e98 100644
--- a/src/framework/theme/components/chat/chat-form.component.ts
+++ b/src/framework/theme/components/chat/chat-form.component.ts
@@ -62,7 +62,25 @@ import { NbComponentOrCustomStatus } from '../component-status';
       </ng-container>
     </div>
     <div class="message-row">
+      <textarea
+        *ngIf="multiline"
+        nbInput
+        fullWidth
+        [status]="getInputStatus()"
+        (focus)="inputFocus = true"
+        (blur)="inputFocus = false"
+        (mouseenter)="inputHover = true"
+        (mouseleave)="inputHover = false"
+        [(ngModel)]="message"
+        (input)="adjustTextareaHeight($event)"
+        rows="1"
+        (ngModelChange)="onModelChange($event)"
+        [class.with-button]="showButton"
+        placeholder="{{ fileOver ? dropFilePlaceholder : messagePlaceholder }}"
+        (keyup.enter)="sendMessage()"
+      ></textarea>
       <input
+        *ngIf="!multiline"
         nbInput
         fullWidth
         [status]="getInputStatus()"
@@ -141,6 +159,12 @@ export class NbChatFormComponent {
    */
   @Input() dropFilePlaceholder: string = 'Drop file to send';
 
+  /**
+   * Allow multiline input
+   * @type {boolean}
+   */
+  @Input() multiline: boolean = false;
+
   /**
    *
    * @type {EventEmitter<{ message: string, files: File[] }>}
@@ -252,4 +276,13 @@ export class NbChatFormComponent {
   onModelChange(value: string): void {
     this.onInputChange.emit(value);
   }
+
+  adjustTextareaHeight(event: Event): void {
+    const textarea = event.target as HTMLTextAreaElement;
+    if (textarea) {
+      textarea.style.height = 'auto';
+      const computedHeight = textarea.scrollHeight;
+      textarea.style.height = computedHeight + 'px';
+    }
+  }
 }