Family name Ербек (Ербек 
) , all over the world, is a very rare last name. The cognomen Ербек is characteristic of Kyrgyzstan, where it is a very rare surname, Kazakhstan, and Ukraine, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Kazakhstan, Kyrgyzstan, and Russia. More prevalently, Ербек is the forename as well as the last name.