Cos, COS, CoS, coS or Cos. may refer to:

Look up Cos or cos in Wiktionary, the free dictionary.

• 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

• 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

• 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

• 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

• College of the Sequoias, California, US
• College of the Siskiyous, California, US

• 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)

• Kos (disambiguation)

This disambiguation page lists articles associated with the title Cos.
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