FCU may refer to:
Organisations Fission Uranium Corp. (TSX code: FCU), a Canadian mining company
Education Feng Chia University, in Taichung, Taiwan Filamer Christian University, in Roxas, Capiz, Philippines Fukien Christian University, now Fujian Normal University, in Fujian, China Fukuyama City University, in Hiroshima, Japan
Finance Federal credit union, in the US Florida Credit Union, an American financial institution Foreign & Colonial Eurotrust, a British investment trust
Football clubs FC Uijeongbu, South Korea FC Ultramarina, Cape Verde F.C. United of Manchester, England FC Unterföhring, Germany 1. FC Union Berlin, Germany FC Utrecht, the Netherlands
Science and technology Fan coil unit, in HVAC systems Flexor carpi ulnaris muscle, in the forearm Fuel control unit, in gas turbine engines Fused connection unit, the name for a permanent wiring outlet in electrical wiring in the United Kingdom
Other uses Flight Control Unit, basically the Autopilot in Aviation Fact Checkers Unit, an American comedy series Ferrovia Centrale Umbra, a railway line in Italy