Cognomen Grija (Grija 
) , across the world, is a rare last name. The last name Grija is characteristic of Morocco, where it is a rare surname, Greece, where it is a very rare surname, and the United States, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Morocco, Greece, and India. More frequently, Grija is the forename as well as the last name.