OCU may mean: Ohio Christian University Oklahoma Christian University Oklahoma City University Operational conversion unit, a unit in an air force Operational Command Unit, a unit in a police force Operator Control Unit, a hardware or software control interface for an automated system Organizacion de Consumidores y Usuarios, a consumer organization in Spain, part of Euroconsumers Orthodox Church of Ukraine Osaka City University, a public university in Osaka, Japan Overseas Chinese University, a university in Taichung, Taiwan