Surname Калвин (Calvin 
, Kalvin , Kalwin 
) , in all the world, is a common cognomen. The family name Калвин is habitual in Cameroon, where it is quite a common surname, Jamaica, where it is quite a rare surname, and Hong Kong. In absolute terms, it is the most numerous in the United States, Indonesia, and Cameroon. More frequently, Калвин is the forename as well as the last name.