- RUC
- Royal Ulster Constabulary (Community » Law)Registro Unico De Contribuyente (International » Spanish)** Rapid Update Cycle (Computing » Software)** Rapid Update Cycle (Academic & Science » Ocean Science)** Rapid Update Cycle (Academic & Science » Meteorology)* Robert Uluwehi Cazimero (Community » Famous)* Referred Upon Completion (Governmental » FBI Files)* Republican Union Of Christians (Community » Religion)* Really Useless Cup (Community » Sports)
Abbreviations dictionary. 2012.