Cos, COS, CoS, coS or Cos. may refer to: Mathematics, science and technology Carbonyl sulfide Class of service (CoS or COS), a network header field defined by the IEEE 802.1p task group Class of service (COS), a parameter in telephone systems Cobalt sulfide COS cells, cell lines COS-1 and COS-7 Cosine, a trigonometric function Cosmic Origins Spectrograph, a Hubble Space Telescope instrument Operating systems COS (operating system), a Chinese mobile OS Cray Operating System Chippewa Operating System, from Control Data Corporation Commercial Operating System, from Digital Equipment Corporation GEC COS Places Cos, Ariège, France Cos or Kos, a Greek island COS, IATA code for Colorado Springs Airport, Colorado, US Colorado Springs, Colorado, a US city, derived from its airport's code Gulf of Cos, Aegean Sea Villa de Cos, Zacatecas, Mexico Cosio Valtellino (Cös), Lombardy, Italy COS, UNDP country code of Costa Rica Organizations, societies and churches Charity Organization Society Children's Orchestra Society, New York City, US Church of Satan, a religious organization Church of Scientology Church of Scotland Commandement des Opérations Spéciales, coordinating French special forces Community of Science, an online database Company of Servers, Anglican altar servers Cooper Ornithological Society, California, US Universities and schools College of the Sequoias, California, US College of the Siskiyous, California, US Other uses Childhood onset schizophrenia Roman consul, a political office in Ancient Rome COS (clothing), a British fashion brand Cos lettuce Martín Perfecto de Cos (1800–1854), Mexican general Consequence of Sound (now Consequence), a New York, US online magazine Cos (television series), 1976, hosted by Bill Cosby Space Operations Command (Italy) (Comando delle Operazioni Spaziali) See also Kos (disambiguation)