What does RNR stand for?

Air Cargo Masters, Inc. - FAA designator (FAAC)

Rate Not Reported (DS)

Receive Not Ready - Computer science (IEEE)

Receiver Not Ready (SAUS)

Redwood Library and Athenaeum, Newport, RI - Library symbol - Library of Congress (LCLS)

Registered Nurse Recruiter (NUJO)

Registry of Nursing Research (SAUS)

RenaissanceRe Holdings Ltd. - NYSE symbol (SAG)

Renewable Natural Resources (DI)

Renewal Not Required (AIA)

Request Not Ready (SAUS)

Resonant Nuclear Reaction - Physics

Ribonucleotide Reductase - An enzyme

Ring Number Read - Telecommunications (IAA)

Robinson River - Papua New Guinea - Airport symbol (OAG)

Royal Naval Reserve - British

Royal Naval Reserves (SAUS)

Royal Navy Reserve (SAUS)

Runner (MSA)