GRR

GRR may refer to:

Transport

 * Agroar Carga Aérea, a defunct Portuguese airline
 * Gadalar railway station, in Pakistan
 * Georgetown Railroad, in Texas
 * Gerald R. Ford International Airport, in Grand Rapids, Michigan
 * Grand River Railway, in Ontario, Canada
 * Vernon J. Ehlers Station, in Grand Rapids, Michigan

Other uses

 * Gainesville Roller Rebels, an American roller derby league
 * Gate River Run, a running race in Jacksonville, Florida
 * Gradual release of responsibility, teaching model
 * Green Reefers, a Norwegian shipping company
 * Gross reproduction rate
 * Grothendieck–Riemann–Roch theorem
 * Gurara language, a Berber language of Algeria with the ISO 639-3 code