Disc

Disc, Disk, DISC or DISK may refer to:

Data storage

Disk storage, a general category of data storage mechanisms
- Magnetic disk
  - Floppy disk, a magnetic data storage device using a flexible disc
  - Hard disk drive, a non-volatile magnetic data storage device
- Optical disc, commonly a polycarbonate disc
  - Blu-ray Disc (BD), a high-density optical disc intended mainly for video storage
  - Compact Disc (CD), a form of optical disc used mainly for audio data
  - Digital Versatile Disc (DVD), a form of optical disc used mainly for video and other data
  - Enhanced Versatile Disc (EVD), an optical medium-based digital audio/video format under development
  - High-Definition Digital Versatile Disc (HD DVD), a high-density optical disc intended mainly for video storage
  - Holographic Versatile Disc (HVD), a next generation ultra-high-density optical disc format replacement for blu-ray
  - Laserdisc (LD), the first commercial optical disc storage medium
  - MiniDisc (MD), a magneto-optical disc-based data storage device
- Disc film, a still-photography film format
- RAM disk, a volatile solid state drive
Analog discs typically relying on a modulated groove to record signals
- Gramophone record, an analog recording medium
- LP record a specific type of gramophone record
- Aluminum disc an analog recording disc used mainly for early radio recordings
- Acetate disc an aluminium disc coated with nitrocellulose lacquer

Accretion disc, diffuse material in orbital motion around a central body such as a star or black hole
Debris disk, a ring shaped circumstellar disk of dust and debris in orbit around a star
Disc (galaxy), a disc-shaped group of stars
Protoplanetary disk, a rotating disc of dense gas surrounding a newly formed star, a form of accretion disc
Scattered disc, a distant region of the Solar System thinly populated by icy minor planets

Death-inducing signaling complex, a multi-protein complex formed by members of the death receptor family of apoptosis-inducing cellular receptors
Disk, an enlargement or outgrowth from the receptacle of the flower
Intervertebral disc, in animal anatomy, part of the spine
Placenta or placental disc, in mammals, an organ that connects a developing fetus to its mother's uterus
Optic disc, in the retina

DISC1 (Disrupted in Schizophrenia 1), a human gene with a wide array of interactions
DISC assessment, in psychology, a group of psychometric tests based on the work of William Moulton Marston

Disc brake, a device for slowing or stopping the rotation of a wheel
Disc parking, a parking regulation with free parking when using a parking disc (clock disc)
Vehicle licence, commonly known as a "tax disc" in the UK, is a vehicle licence receipt placed inside the windscreen

International Symposium on Distributed Computing, abbreviated as "DISC", an academic conference
Disc (band), an American experimental music band
Disc (magazine), a British music magazine, at one time known as Disc and Music Echo
Disc harrow, a farm implement
Disc jockey, a person who selects and plays pre-recorded music for an audience
Discworld, a comedic fantasy book series by the British author Terry Pratchett
Flying disc, a throwing toy or Frisbee
Confederation of Revolutionary Trade Unions of Turkey abbreviated as "DİSK" in Turkish, a trade union centre
Dundee International Sports Centre (DISC), a sports centre in Scotland
Defence Intelligence and Security Centre (DISC), headquarters of the British Army Intelligence Corps
Independent Conference (Delaware) or the Delaware Independent School Conference (DISC), a high-school sports conference