RSR

RSR is a three letter acronym which may refer to:


 * Radio Suisse Romande the Swiss French public service radio group
 * Railway Safety Regulator, an agency of the South African government
 * Retail Systems Research, a research company for the retail industry
 * Former international license plate code for Southern Rhodesia
 * Rock Structure Rating
 * Rochester and Southern Railroad
 * Romanian Socialist Republic or Republica Socialistă România, the name of Communist Romania from 1965 to 1989
 * Ronald Suresh Roberts (born 1968), British West Indian biographer and columnist
 * Rotary Scout Reservation, a Boy Scout camp in upstate New York
 * RSR (spyplane), a Russian supersonic surveillance aircraft
 * RSR ("RennSport Rennwagen"), race versions of the Porsche 911