RRC explained

RRC may stand for the following:

Military units

Regimental Reconnaissance Company, within the 75th Ranger Regiment of the U.S. Army, established in 1984
Royal Regiment of Canada, a Canadian Army regiment established in 1862
Royal Rifles of Canada, a Canadian Army regiment active from 1862 to 1966

Railroad Commission of Texas
Range Resources, an American natural gas exploration and production company (NYSE: RRC)
Reconstructionist Rabbinical College in Wyncote, Pennsylvania
Regional Radiocommunication Conference of the International Telecommunication Union
Relief and Rehabilitation Commission of Ethiopia
Road Runners Club (UK), an association formed in 1952
Rubber Reserve Company, pre-World War II US government agency that stockpiled reserves of natural rubber
Rules and Referee Committee, of the Federation of International Bandy

Radio Resource Control, a concept and a protocol name for a set of control messages
Rolling resistance coefficient
Root-raised-cosine filter, used in digital communication systems

Rbai Rafid Collection (RRC), a private collection of Mandaic manuscripts in Nijmegen, Netherlands
Roman Republican Coinage, a reference work on Roman Republican currency written by Michael H. Crawford
Royal Red Cross, a United Kingdom and Commonwealth military decoration; recipients may use the postnominal "RRC"