Family name Siutin (Siutin 
, Сютин 
, Сиутин ) , in all the world, is a rare cognomen. The cognomen Siutin is habitual in Russia, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Much less frequently, Siutin is the forename as well as the last name.