DOS is shorthand for the MS-DOS and IBM PC DOS family of operating systems. DOS may also refer to:

Computing

Data over signalling Data over signalling (sometimes data over signaling) or DoS, is a technique in telecommunications in which primary data is sent over a signalling channel instead of the subscriber's bearer channel. Background Data over signalling was designed ...

(DoS), multiplexing data onto a signalling channel * Denial-of-service attack (DoS), an attack on a communications network * Disk operating system ** List of disk operating systems, Apple DOS, Atari DOS, DOS/360, etc. * Distributed operating system

Music

Albums

* ''Dos'' (Altered State album) * ''Dos'' (Dos album) * ''Dos'' (Fanny Lú album) * ''Dos'' (Gerardo album) * ''Dos'' (Malo album), 1972 * ''Dos'' (Myriam Hernández album), 1989 * ''Dos'', album by Wooden Shjips, 2009 * '' ¡Dos!'', album by Green Day

Other uses in music

Dos (band) dos (from the Spanish word for "two") is an American rock group composed of Mike Watt and Kira Roessler, who both sing and play bass guitar. Critic Greg Prato describes their unusual instrumentation as "a haunting yet intriguing and original s ...

, an American band * DOS (concert), by Filipino singer Daniel Padilla

Organisations

* Democratic Opposition of Serbia, a former political alliance *

Department of Space The Department of Space is an Indian government department responsible for administration of the Indian space program. It manages several agencies and institutes related to space exploration and space technologies. The Indian space program und ...

, India * Deutscher Olympischer Sportbund *

Directorate of Overseas Surveys The Ordnance Survey International or Ordnance Survey Overseas Directorate its predecessors built an archive of air photography, map and survey records for the United Kingdom from 1946 to 1999. The Ordnance Survey International Collection (formerly ...

, UK 1957–1984 *Dominus Obsequious Sororium, within cult NXIVM * United States Department of State

Places

* Dos, a village in Vidra Commune, Romania

Science

* Density of states in physics * DOS-1 etc., Russian space station designation in the Salyut programme *

Dioctyl sebacate Dioctyl sebacate (also di(2-ethylhexyl) sebacate, commonly abbreviated as DOS, DEHS, and BEHS) is an organic compound which is the diester of sebacic acid and 2-ethylhexanol. It is an oily colorless liquid and is used as a plasticizer, including i ...

, an organic chemical *

Diversity oriented synthesis In chemistry a divergent synthesis is a strategy with the aim to improve the efficiency of chemical synthesis. It is often an alternative to convergent synthesis or linear synthesis. In one strategy divergent synthesis aims to generate a library ( ...

in chemistry

Sports

DOS Kampen DOS Kampen (acronym of ''Door Oefening Sterk Kampen'') is a Dutch football club based in the city of Kampen, currently competing in the Eerste Klasse The Eerste Klasse ( en, First Class) started as the 1st tier of football in the Netherlands ...

, a Dutch football club * VV DOS, a past Dutch football club now part of FC Utrecht

Other uses

Dos (card game) Uno (; from Spanish and Italian for 'one'; stylized as UNO) is an American shedding-type card game that is played with a specially printed deck. The game's general principles put it into the crazy eights family of card games, and it is simi ...

, a variation of Uno * Dos, an Ancient Roman dowry * Day of Silence, an LGBT observance