CRO, Cro, or CrO may refer to:
'' Cro'' (1993–1994), an American animated television series, or its titular character
Cro, a concept in early Scots law described in the '' Leges inter Brettos et Scottos''
ČRo, station designator prefix used by the Czech public radio broadcaster Český Rozhlas
Cathode-ray oscilloscope, a type of electronic test equipment
IOC and FIFA country code for (the ISO 3166-1 code is HRV)
Crown Airways, the ICAO code
Conversion rate optimisation in internet marketing
Cro (rapper), German rapper Carlo Waibel
''Cro'' is an American animated television series produced by the Children's Television Workshop and Film Roman. It debuted on September 18, 1993 as part of the Saturday morning line-up for fall 1993 on ABC. ''Cro'' lasted 1½ seasons and ran in reruns through summer 1995. The show had an educational theme (this before federal educational/informational mandates took effect in 1996), introducing basic concepts of physics, mechanical engineering, and technology. The premise of using woolly mammoths as a teaching tool for the principles of technology was inspired by David Macaulay's '' The Way Things Work''; Macaulay is credited as writer on the show. The last new episode aired on October 22, 1994. The show was released on video (VHS) in a total of nine volumes.
Cro (born Carlo Waibel on January 31, 1990) is a German rapper, singer, producer and designer, who is represented by Chimperator Productions. He describes his music as a mixture between pop and rap, which he calls "Raop".