- Royal Canadian Naval Air Service (RCNAS)
- Royal Canadian Navy
- Royal Canadian Regiment
- Royal Commission of Inquiry on Constitutional Problems
- Royal Commission of Inquiry on Education in the Province of Quebec (Parent Commission)
- Royal Commission on Aboriginal Peoples
- Royal Commission on Banking and Finance
- Royal Commission on Bilingualism and Biculturalism
- Royal Commission on Broadcasting
- Royal Commission on Canada's Economic Prospects
- Royal Commission on Corporate Concentration
- Royal Commission on Dominion-Provincial Relations
- Royal Commission on Economic Union and Development Prospects for Canada
- Royal Commission on Energy
- Royal Commission on Government Organization