卡式录音带（英语：Compact Audio Cassette，又叫卡带、盒带、盒式录音磁带，或者简单称为录音带）是一种用于存储声音的磁带。卡式录音带最早用于听写，但在其保真度得到改进后作为盘式录音带的补充广泛用于各种非专业的场合。它的用途包括便携式音乐存储、家庭录音等，甚至包括在微型计算机出现的初期进行数据存储。从1970年代初期直至1990年代晚期，卡式录音带一直是预录制音乐最流行的两大存储格式之一，在其间它的对手从起初的密纹唱片变成了后来的CD。名称中的“卡式”来自于法语词“Cassette”，意思是“小盒子”。

The Compact Cassette or Musicassette (MC), also commonly called cassette tape, audio cassette, or simply tape or cassette, is a magnetic tape recording format for audio recording and playback released by Philips in 1962. Compact cassettes come in two forms, either already containing content as a pre-recorded cassette, or as a fully recordable "blank" cassette. It was designed originally for dictation machines, but improvements in fidelity led the Compact Cassette to supplant the Stereo 8-track cartridge and reel-to-reel tape recording in most non-professional applications. Its uses ranged from portable audio to home recording to data storage for early microcomputers. Between the early 1970s and the early 2000s, the cassette was one of the two most common formats for prerecorded music, first alongside the LP record and later the compact disc (CD).