RUC

RUC may refer to:
 * Rádio Universidade de Coimbra or Coimbra University Radio, a Portuguese university station
 * Rapid Update Cycle, an atmospheric prediction system
 * Renmin University of China, Beijing
 * Road User Charges (RUC), taxes payable in New Zealand
 * Roskilde University or Roskilde Universitetscenter
 * Royal Ulster Constabulary, the police force in Northern Ireland from 1922 to 2001
 * Specialty Society Relative Value Scale Update Committee, for US healthcare pricing

Ruc may refer to:
 * Chut language in Vietnam, also known as Ruc or Ruc-Sach
 * Rục people