Family name كالفن (Calvin 
, Kalvin , Kalwin 
) , around the world, is a common cognomen. The family name كالفن is characteristic of Cameroon, where it is quite a common surname, Jamaica, where it is quite a rare surname, and Hong Kong. Not in comparison with a country's population, it is commonest in the United States, Indonesia, and Cameroon. More prevalently, كالفن is the forename as well as the last name.