Last name Galyu (Gallo 
, Galyu 
) , throughout the world, is a widespread cognomen. The surname Galyu is characteristic of Italy, where it is a common surname, Argentina, where it is quite a common surname, and Uruguay (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Italy, Argentina, and Colombia. Very seldom, Galyu is the forename as well as the last name.