ID3 (disambiguation)

ID3 is a metadata format for MP3 audio files.

ID3 or ID-3 may also refer to:
 * ID3 algorithm, an algorithm for constructing decision trees
 * ID3 (gene), a human protein
 * ID-3 format, a standard size for identification cards defined by ISO/IEC 7810
 * ID3, a post-dubstep/glitch artist
 * Volkswagen ID.3, a battery electric car by the German manufacturer Volkswagen