Surname Йлга (Ilga 
, Йлга 
, Ylga 
) , in the world, is a rare family name. The family name Йлга is characteristic of Latvia, where it is a rare surname, Malaysia, where it is a very rare surname, and Germany. Measured by absolute frequency, it is the most numerous in Germany, Indonesia, and Poland. Much more frequently, Йлга is the forename as well as the last name.