NRL
NRL stands for:
- National Rugby League , the highest Australian rugby league
- National reference laboratories of the German Federal Institute for Risk Assessment
- Nolinor , ICAO code of the Canadian charter airline
- North Ronaldsay , UK airport IATA code
- Nouvelles de la République des Lettres , scientific journal
- United States Naval Research Laboratory , the joint research laboratory for the United States Navy and the United States Marine Corps