| Acronym | Definition |
|---|
| OCU | Oklahoma City University |
| OCU | Oakland City University (Oakland City, IN) |
| OCU | Organización de Consumidores y Usuarios (Spanish: Organization of Consumers and Users) |
| OCU | Organized Crime Unit |
| OCU | Office Clerical Unit |
| OCU | Operational Conversion Unit |
| OCU | Office Channel Unit |
| OCU | Operator Control Unit (robotics) |
| OCU | Operational Command Unit (London Metropolitan Police) |
| OCU | Organisation pour une Citoyenneté Universelle (French: Organization for Universal Citizenship) |
| OCU | Organisation of Consumers and Users (Spain) |
| OCU | Okinawa Christian University (Japan) |
| OCU | Olefins Conversion Unit |
| OCU | Orderwire Control Unit |
| OCU | Oceanic Community Union (vidoe game) |
| OCU | Operational Capability Update |
| OCU | Ogoni Central Union |