Cognomen Агуеро (Aguero 
, Агуеро) , throughout the world, is a widespread surname. The family name Агуеро is characteristic of Latin America and the Caribbean, particularly Paraguay, where it is a common surname, Costa Rica, and Argentina (explore the name in all countries). Measured by absolute frequency, it is commonest in Latin America and the Caribbean, particularly Argentina, Paraguay, and Mexico. Much less frequently, Агуеро is the forename as well as the last name.