提字器 (英文： teleprompter，也叫 telescript) 是一个为演讲者在演讲时显示讲稿内容的设备。使用讲词提示器和使用提示卡的方法类似。屏幕通常放在一个专业视频摄像头的相机镜头前，并且低于这个镜头。屏幕上的话使用一个透明玻璃片状或专门准备的分光镜反射入演讲者的眼睛。演讲者的视线穿过玻璃的前端进入镜头，而周围的镜头和背面的玻璃防止不必要的光线反射进入镜头。

由于演讲者不需要往下看讲稿，能直接看摄像机镜头，使得演讲者看起来像是背下来了讲稿或者正在即兴演讲。相比之下，提示卡永远需要被放在镜头轴线上，显得演讲者在看摄像机旁边的某一个点，让人觉得他心不在焉。

A teleprompter is a display device that prompts the person speaking with an electronic visual text of a speech or script. Using a teleprompter is similar to using cue cards. The screen is in front of, and usually below, the lens of a professional video camera, and the words on the screen are reflected to the eyes of the presenter using a sheet of clear glass or a specially prepared beam splitter. Light from the performer passes through the front side of the glass into the lens, while a shroud surrounding the lens and the back side of the glass prevents unwanted light from entering the lens.