Co
CO can stand for:
- Carbon monoxide (chemical symbol)
- Central office (telecommunications and telephony)
- Chesapeake and Ohio Railroad (AAR reporting mark CO)
- Colombia (ISO 3166–1 digram and NATO country code)
- Colorado (U.S. postal symbol)
- Commanding officer (military)
- Conscientious objector (military)
- Continental Airlines (IATA airline code)
Co can stand for:
- Co is an UIC classification of railroad locomotive wheel arrangement, known as 0–6–0 in the Whyte notation
- an ethnic group in Southeast Asia
- Cobalt (ferromagnetic metallic chemical element)
- Company (Co.) (general business abbreviation)
co can stand for:
- check out (RCS command)
- a gender-neutral pronoun
- a prefix (form of com-, signifying with, together, in conjunction, joint)
c/o can stand for:
- Care of (postal code used for temporary address change)
Categories: Disambiguation | Lists of two-letter combinations