RNC
- NC (complexity)
- Nishinippon Broadcasting
- RELAX NG
- Radio Network Controller
- Ranchi Junction railway station
- Raster Navigational Charts (NOAA)
- Rear naked choke
- Republican National Committee
- Republican National Convention
- Ribosome-nascent chain complex
- Riverside National Cemetery
- Royal National College for the Blind
- Royal Newfoundland Constabulary
- Royal Niger Company
- Russia-NATO Council
- Rwanda National Congress