Cos

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, 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)