| Acronym | Definition |
|---|
| RCU➣Respiratory Care Unit (various locations) |
| RCU➣Remote Control Unit |
| RCU➣Read Copy Update |
| RCU➣Remote Control Utility |
| RCU➣Rack Controller Unit |
| RCU➣Regional Coordinating Unit |
| RCU➣Royal Credit Union (various locations) |
| RCU➣Research Coordinating Unit (various organizations) |
| RCU➣Radio Control Unit |
| RCU➣Remote Concentrator Unit |
| RCU➣Requisition Control Unit (US Navy) |
| RCU➣Radio Channel Unit |
| RCU➣Refugee Coordination Unit (Nepal) |
| RCU➣Regional Cadet Unit (Australia) |
| RCU➣Room Control Unit |
| RCU➣Rate Construction Unit |
| RCU➣Retto Colite Ulcerosa |
| RCU➣Radio Contact Underground (French Internet radio station) |
| RCU➣Risk Control Unit (various companies) |
| RCU➣Radar Control Unit |
| RCU➣Revelar Connection Utility (Revelar, Inc.) |
| RCU➣Reserve Component Unit |
| RCU➣Refrigeration Control Unit |
| RCU➣Restrict Casual Use |
| RCU➣Remote Carrier Urban |
| RCU➣Relocatable Code Unit |
| RCU➣Residual Calibration Uncertainty |
| RCU➣Ring Concentrator Unit |
| RCU➣Remote Converter Unit |
| RCU➣Rocket Countermeasure Unit |
| RCU➣Rugby Club Uzetien (French rugby club) |
| RCU➣Rapid Cooling Unit |