数字音频播放器（英语：digital audio player, DAP），俗称MP3，是一种可保存、组织与播放音频文件格式的设备。常被称为「MP3播放器」（因为MP3格式的普遍性）。

DAP的前身为可擕式CD播放器。在数码制式的音频播放器出现前，一般可擕式音频播放器为模拟仿真的制式，例如使用卡式录音带的随身听。

DAP可以播放很多其他的格式，如WMA、WAV等。一些格式会跟有限制性的技术 DRM合并，比如Janus和FairPlay, 一般是一些付费下载网站的一部分。其它一些格式则是完全的专利自由或者在另外一些方面开放，比如Ogg Vorbis，FLAC，Speex (Ogg开放多媒体工程的所有部分),以及模块文件格式。

An MP3 player is an electronic device that can play digital audio files. The term 'MP3 player' is a misnomer, as most players play more than the MP3 file format. A more accurate, but less utilized term is DAP (Digital Audio Player).

Since the MP3 format is widely used, almost all players can play that format. In addition, there are many other digital audio formats. Some formats are proprietary, such as MP3, Windows Media Audio (WMA), and Advanced Audio Codec (AAC). Some of these formats also may incorporate digital rights management (DRM), such as WMA DRM, which are often part of paid download sites. Other formats are patent-free or otherwise open, such as Vorbis, FLAC, and Speex (all part of the Ogg open multimedia project).