NRR

NRR may refer to:

Club edit

Newport Reading Room, a gentlemen's club in Newport, Rhode Island

Electronic mail edit

No Reply Required in the subject field of an email

Law and regulation edit

National Recording Registry in the United States
Non-Repudiation of receipt, a legal acknowledgement of origination/authorship of a document (as per internet RFC4130)
Office of Nuclear Reactor Regulation in the United States

Medicine/science edit

Net reproduction rate in human fertility
Nitrogen reduction reaction, the conversion of N₂ to ammonia
Noise reduction ratings in hearing protectors

Music edit

National Rock Review, an American website for rock music reviews and interviews

Sports edit

Net run rate in cricket

Places edit

IATA code of José Aponte de la Torre Airport in Ceiba, Puerto Rico

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