CRR
CRR stands for:
- Capital Requirements Regulation , Regulation (EU) No. 575/2013 (Capital Adequacy Regulation ) , a European regulation within the framework of Basel III
- Connecticut River Railroad , a former railroad company based in Massachusetts, Vermont and New Hampshire, United States
- Contoocook River Railroad , a former railroad company in New Hampshire, United States
- Cox-Ross-Rubinstein model , a discrete model for modeling securities and share price developments
crr stands for:
- Carolina-Algonquin (language) (ISO-639-3 code), extinct Eastern Algonquin language of the North Carolina-Algonquin in North Carolina