Last name R-G (R-G 
) , throughout the world, is a very rare cognomen. The surname R-G is characteristic of Morocco, where it is a very rare surname, Colombia, and Australia. Not in comparison with a country's population, it most frequently occurs in Morocco, Colombia, and France. Likewise, R-G is the forename as well as the last name. Parts of the name also exists independently as a first name R, and a first name G.