触摸屏幕（英语：Touch panel、Touchscreen、Touch pad），是可以接收触头（包括手指或者胶笔头等）等输入信号的感应式液晶显示或者平板屏幕设备。当接触了屏幕上的图形按钮时，屏幕上的触觉反馈系统可根据预先编程的程序驱动各种链接设备，可用以取代机械式的按钮皮肤，并借由显示画面制造出生动的影音效果。 触摸屏幕的用途非常广泛，从常见的提款机、PDA、到工业用的触摸电脑，因为触摸屏幕为亲切且生动的人机接口。2007年以后，愈来愈多智能手机也采用了触摸屏，典型的例子如iPhone。

A touchscreen is an input device normally layered on the top of an electronic visual display of an information processing system. A user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus and/or one or more fingers. Some touchscreens use ordinary or specially coated gloves to work while others use a special stylus/pen only. The user can use the touchscreen to react to what is displayed and to control how it is displayed; for example, zooming to increase the text size.