Surname سييرا (Sierra 
, Cierra , سييرا) , in all the world, is a widespread last name. The family name سييرا is characteristic of Latin America and the Caribbean, particularly Colombia, where it is a common surname, Honduras, and Puerto Rico (explore the name in all countries). Measured by absolute frequency, it is commonest in Latin America and the Caribbean, particularly Colombia, Mexico, and Honduras. Much less frequently, سييرا is the forename as well as the last name.