Cognomen Лейга (Leiga 
, Leyga 
, Лейга ) , throughout the world, is a rare last name. The cognomen Лейга is habitual in Lithuania, where it is a rare surname, Philippines, where it is a very rare surname, and Argentina. Not in comparison with a country's population, this name is the most popular in Philippines, Russia, and Argentina. Much less frequently, Лейга is the forename as well as the last name.