8-track may refer to:

• 8-track tape, known as the 8-track cartridge, an analog music recording format popular from the late 1960s to the early 1980s
• 8-track (multitrack), reel-to-reel tape used in professional recording studios
• 8tracks, an online site for user-generated mixtapes

Stereo 8, commonly known as the eight-track cartridge, eight-track tape, or simply eight-track, is a magnetic tape sound recording technology. It was popular in the United States from the mid-1960s through the early 1980s, but was relatively unknown in many European countries. Stereo 8 was created in 1964 by a consortium led by Bill Lear of Lear Jet Corporation, along with Ampex, Ford Motor Company, General Motors, Motorola, and RCA Victor Records (RCA). It was a further development of the similar Stereo-Pak four-track cartridge created by Earl "Madman" Muntz. A later quadraphonic version of the format was announced by RCA in April 1970 and first known as Quad-8, then later changed to just Q8.