Last name אראו (Arrau 
, אראו 
) , in the entire world, is a rare family name. The family name אראו is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a rare surname, Colombia, where it is a very rare surname, and Peru. Not in comparison with a country's population, this name is the most popular in Chile, Colombia, and the United States. Much less frequently, אראו is the forename as well as the last name.