Surname Ganha (Ganha 
, กานา ) , across the world, is a rare last name. The cognomen Ganha is habitual in Thailand, where it is a rare surname, Portugal, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Thailand, India, and Portugal. Likewise, Ganha is the forename as well as the last name.