Surname ケロ (Quero 
, ケロ 
) , in all the world, is a common last name. The family name ケロ is characteristic of Venezuela, where it is quite a common surname, Spain, where it is quite a rare surname, and Chile. Measured by absolute frequency, it most frequently occurs in Venezuela, Mexico, and Spain. Much less frequently, ケロ is the forename as well as the last name.