COR may refer to:

• Change Order Request
• California State Prison, Corcoran, in the USA
• IATA airport code for Ingeniero Aeronáutico Ambrosio L.V. Taravella International Airport, servicing Córdoba, Argentina
• Central outdoor router, see Router (computing)
• Certificate of Registration, the legal document that proves an aircraft is legally registered to fly and indicates to whom the aircraft is registered
• Cervico-Ocular Reflex
• Chain of responsibility
• Chain of responsibility pattern
• Church of the Redeemer (disambiguation)
• Confirmation of Receipt
• Church of the Resurrection (disambiguation)
• Coefficient of restitution
• College of Radiographers
• Committee of the Regions
• Commonwealth Oil Refineries
• Confederation of Regions
• Contracting Officer's Representative -- See Government contract or COTR
• COR (label) - label for Kashruth Council of Canada
• COR (Canadian workers' compensation) - Certificate of Recognition granted by several Canadian workers' compensation authorities
• Córdoba, Argentina (airport code)
• Council of Representatives
• Cup of Russia
• the station code for Corby railway station
• shorthand for Coronatine, a bacterial effector.

• Confirmation of Receipt

Cor may refer to

Cor!!, a British comic book Was launched in June 1970 by IPC (International Publishing Corporation), their sixth new comic in just over a year. Cor!! was edited by Bob Paynter.