Last name Γρύλλος (Grill 
, Grilo 
, Greier 
) , around the world, is a common surname. The last name Γρύλλος is characteristic of Portugal, where it is quite a common surname, Austria, and Luxembourg, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Portugal, Brazil, and Germany. Much less frequently, Γρύλλος is the forename as well as the last name.