Cognomen Nejko (Нейко 
, Nejko 
) , around the world, is a rare family name. The family name Nejko is habitual in Bulgaria, where it is quite a common surname, Slovenia, where it is a rare surname, and Ukraine. In absolute terms, it most frequently occurs in Eastern Europe, particularly Bulgaria, Ukraine, and Russia. Likewise, Nejko is the forename as well as the last name.