Cognomen Calaa (Calaa 
) , in all the world, is a rare last name. The last name Calaa is characteristic of Saudi Arabia, where it is a rare surname, Portugal, where it is a very rare surname, and Mexico, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Saudi Arabia, India, and Portugal. Likewise, Calaa is the forename as well as the last name.