CRO, Cro, or CrO may refer to:
Arts and entertainment Cro (musician) (born 1990), German rapper and singer Cro (TV series), a 1993 American children's animated series
Occupations Certified Radio Operator (United States) Chief reputation officer Chief research officer Chief restructuring officer Chief revenue officer Chief risk officer Combat Rescue Officer, in the United States Air Force
Businesses and organizations Cave Rescue Organisation, England Český Rozhlas, a Czech public radio broadcaster (station designator prefix ČRo) Civilian Repair Organisation, a British World War II aircraft repair scheme Commonwealth Relations Office, UK, 1947-1966 Companies Registration Office (Ireland) Contract research organization, a company that provides support to the pharmaceutical, biotechnology, and medical device industries Crown Airways (ICAO code CRO) Conversion rate optimization, (marketing term) Companies Registration Office (disambiguation)
Science and technology Cathode-ray oscilloscope Chromate and dichromate Chromium(II) oxide, with chromium in the +2 oxidation state Contract research organization or Clinical Research Organization, for pharmaceuticals cro, a Lambda phage repressor protein
Law Civil restraint order, against vexatious litigation, UK Cro in early Scots law (see Leges inter Brettos et Scottos)
Other uses Croatia (IOC and FIFA country code CRO) Conversion rate optimization, in internet marketing Credit Repair Organization, see Credit Repair Organizations Act
See also Crow (disambiguation) Cro-Magnon