Cognomen Theka (Theka 
) , around the world, is a rare last name. The last name Theka is characteristic of Albania, where it is quite a rare surname, South Africa, where it is a rare surname, and Italy, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in South Africa, Italy, and Germany. Likewise, Theka is the forename as well as the last name.