Last name Sulkina (Сулкина 
, Sulkina 
, Сулькина ) , in the entire world, is a very rare family name. The cognomen Sulkina is characteristic of Estonia, where it is a rare surname, Russia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Sulkina is the forename as well as the last name.