Cognomen Bonka (Bonka 
, Бонка 
) , all around the world, is quite a rare family name. The cognomen Bonka is characteristic of Bulgaria, where it is quite a common surname, Lithuania, where it is a rare surname, and Ukraine. Measured by absolute frequency, it is commonest in Bulgaria, India, and Ukraine. More prevalently, Bonka is the forename as well as the last name.