GJR may refer to:
Transport Gjögur Airport, serving Árneshreppur district, Iceland Grand Junction Railroad, in the Boston, Massachusetts, area Grand Junction Railway, an early railway company in England Grand Junction Railway (Ontario), a defunct railway company in Canada Guelph Junction Railway, in Guelph, Ontario, Canada
Other uses George Junior Republic, a residential treatment center in Freeville, New York George Junior Republic (Pennsylvania), a residential treatment center near Grove City, Pennsylvania Gurindji Kriol language G. J. R. Krishnan, Indian violinist