Cognomen Jajaja (Jajaja 
, Яяя 
) , all around the world, is a rare family name. The cognomen Jajaja is habitual in Spain, where it is a very rare surname, Indonesia, and Kazakhstan. Not in comparison with a country's population, it most frequently occurs in Indonesia, Russia, and Spain. Very seldom, Jajaja is the forename as well as the last name.