Last name 古洛 (Gullo 
, 古洛 
) , in the world, is a common surname. The family name 古洛 is habitual in Italy, where it is quite a rare surname, Switzerland, and Argentina. Not in comparison with a country's population, it most frequently occurs in Italy, the United States, and Argentina. Likewise, 古洛 is the forename as well as the last name.