MP3, formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III, is a digital audio format.

MP3 may also refer to:

Media .MP3 (album), 2023 album by Emilia MP3: Mera Pehla Pehla Pyaar, a 2007 Indian film MP3 (Marcy Playground album), 2004 MP3 (M. Pokora album), 2008 "MP3", the first track on the 2014 album Simplicity by Tesla

Other uses MP3.com, an online music downloads website Mazda MP3, or Mazda Familia, a car Piaggio MP3, a three-wheeled motorized vehicle Møller–Plesset perturbation of order three Max Payne 3, a third-person shooter game developed by Rockstar Games for the PlayStation 3 and Xbox 360 Mario Party 3, a third and final Mario Party game for the Nintendo 64

See also MPEG-3, a group of audio and video coding standards