Audio CD is an umbrella term that refers to many standards of means of playing back audio on a CD.
It may specifically refer to:
Standards
- Compact Disc, an optical disc used to store digital data
- Red Book (CD standard), the original means of playing back audio on the medium
- 5.1 Music Disc, an extension to the red book standard that uses DTS Coherent Acoustics 5.1 surround sound
- Super Audio CD, a format which competes with DVD-Audio
- MP3 CD, a disc that contains MP3 files in Yellow Book format rather than converted from MP3 to Red Book format
