Cognomen Сайм (Sime 
, Saym 
, Syme 
) , all over the world, is a common family name. The family name Сайм is characteristic of Aland Islands, where it is quite a common surname, North Macedonia, and Cameroon (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Ethiopia, Cameroon, and the United States. Also, Сайм is the forename as well as the last name.