GNR is an abbreviation of two bands:
1. American hard rock band Guns N' Roses
2. Grupo Novo Rock
GNR is a portuguese rock band formed in Porto (Oporto) in the beginning of 1980 by Vítor Rua that abandoned the band in 1982 in search of other sonorities, forming the duo Telectu, along with Jorge Lima Barreto.
GNR is actually the short name for Grupo Novo Rock ("New Rock Group").
GNR were one the groups that better incorporated what was called portuguese rock in the 1980's.