Disk (mathematics), a two dimensional shape, the interior of a circle
Disk storage
Optical disc
Music
Disc (band), an American experimental music band
Disk (album), a 1995 EP by Moby
Other uses
Disc harrow, a farm implement
Discus throw or disc throw, a track and field event involving a heavy disc
Intervertebral disc, a cartilage between vertebrae
Disk (functional analysis), a subset of a vector space
Disc (galaxy), a disc-shaped group of stars
Disc (magazine), a British music magazine
Disk, a part of a flower
Disc number, numbers assigned to Inuit by the Government of Canada
Abbreviations
Death-inducing signaling complex
DISC assessment, a group of psychometric tests
Defence Intelligence and Security Centre or Joint Intelligence Training Group, the headquarters of the Defence College of Intelligence and the British Army Intelligence Corps
Delaware Independent School Conference, a high-school sports conference
Devrimci İşçi Sendikaları Konfederasyonu, a Turkish trade union centre
Domestic international sales corporation, a provision in U.S. tax law
Dundee International Sports Centre, a sports centre in Scotland
International Symposium on Distributed Computing, an academic conference