(a) comp.os.linux.announce – Cost Of Living Adjustment COLT – (a) Combat Observation and Lasing Team (military) COM – (s) Comoros (ISO 3166 trigram) – (a) Component Object Model COMECON – (p) Council for Mutual Economic Assistance (economic counterpart of the Warsaw Pact, 1949–1991) COMMZ – (p) Communications Zone (military) COMSEC – (p) Communications Security (military) CONAD – (p) U.S. Continental Air Defense Command CONCACAF – (a) Confederation Of North, Central American and Caribbean Association Football CONMEBOL – (p) Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for "South American Football Confederation") CONOPS – (p) Concept of Operations (military) CONUS – (p) Continental United States COO – (i) Chief Operating Officer COP – (s) Colombian peso (ISO 4217 currency code) – (a) Common Operating/Operational Picture COPD –(i) Chronic obstructive pulmonary disease COPE – (a) U.K. Committee On Publication Ethics COPUS – (p) U.K. Committee on the Public Understanding of Science cor – (s) Cornish language (ISO 639-2 code) CORBA – (a) Common Object Request Broker Architecture CORD – (i/a) Common Operational Requirements Document CORE – (a) Consortium for Oceanographic Research and Education CORG – (i) (U.S.) Combat Operations Research Group COROT – (p) COnvection, ROtation and planetary Transits cos – (s) Corsican language (ISO 639-2 code) – Cosine COS – (i) Cooper Ornithological Society COSCOM – (p) Corps Support Command (military) COSER – (p) COoperative SERvice COSHH – (p) Control Of Substances Hazardous to Health (United Kingdom) CoT – (i) Car of Tomorrow (former NASCAR race car design) COTS – (a) Commercial Off The Shelf COVID-19 – Coronavirus disease 2019 Coy – (s) Company (military unit)Cow CP CP (i) Canadian Pacific Check Point Command Post Club Penguin CPA – (i) Certified Public Accountant CPAC (p) Conservative Political Action Conference Cable Public Affairs Channel ("see-pack") CPAP (i) Center for Public Administration and Policy Coalition for the Prevention of Alcohol Problems Consecutive primes in arithmetic progression (p) Continuous positive airway pressure ("see-pap") CPC – Certified Professional Coder, a certification from AAPC CPCU – Certified Property Casualty Underwriter CPD – (i) Capabilities Production Document CPE (i) Certificate of Proficiency in English Certified Professional Ergonomist (i) Clinical Pastoral Education CPEC – (p) China–Pakistan Economic Corridor ("see-pec") CPF (i) Calibration Parameter File Canadian Patrol Frigate CPG – (a) Clinical Practice Guideline CPI – (i) CERDEC Command, Power and Integration CPIM – (a) Certification on Production and Inventory Management CPIR – Computationally-Private