Surname Ройкин (Roykin 
, Ройкин 
, Rojkin 
) , in the world, is a rare last name. The family name Ройкин is habitual in Argentina, where it is a rare surname, Kyrgyzstan, and Poland, where it is a very rare surname. In absolute terms, it is the most numerous in Indonesia, Argentina, and Poland. Very seldom, Ройкин is the forename as well as the last name.