Cognomen オルタ (Olta 
, Horta 
, オルタ) , around the globe, is a common surname. The cognomen オルタ is habitual in Cabo Verde, where it is a common surname, Portugal, where it is quite a common surname, and Colombia, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in Mexico, Brazil, and Portugal. Much less frequently, オルタ is the forename as well as the last name.