In the entire world, Vilka (Vilka 
, Вилька 
) is a rare predominantly girly, but very seldom boy's forename. The forename Vilka is characteristic of Croatia, where it is quite a rare female name, Panama, and Greece, where it is a rare female name. Measured by absolute frequency, it is the most numerous in Croatia, Panama, and India. Also, Vilka is the last name as well as the forename.