Cognomen アレナス (Arenas 
, アレナス) , globally, is a widespread family name. The cognomen アレナス is habitual in Latin America and the Caribbean, particularly Colombia, where it is a common surname, Chile, where it is quite a common surname, and Mexico (explore the name in all countries). In absolute terms, it is the most numerous in Mexico, Colombia, and Philippines. Much less frequently, アレナス is the forename as well as the last name.