Cognomen Tatian (Tatian 
, Татьян 
, Татян 
) , in all the world, is a rare surname. The family name Tatian is habitual in Moldova, where it is quite a rare surname, Romania, where it is a rare surname, and Afghanistan. In absolute terms, it most frequently occurs in Russia, India, and Romania. Also, Tatian is the forename as well as the last name.