Family name Кахян (Кахян 
, Kahian 
, Kahjan ) , in the entire world, is a very rare cognomen. The family name Кахян is characteristic of Argentina, where it is a very rare surname, Israel, and Russia. Measured by absolute frequency, it most frequently occurs in Nigeria, the United States, and Russia. Likewise, Кахян is the forename as well as the last name.