Cognomen 塞弗 (Sever 
, Safer 
, Saive 
) , all over the world, is a common surname. The last name 塞弗 is characteristic of Slovenia, where it is quite a common surname, Croatia, and Turkey. Not in comparison with a country's population, it most frequently occurs in Turkey, Croatia, and the United States. Very seldom, 塞弗 is the forename as well as the last name.