Family name 西凡 (Sifan 
, 西凡 ) , in all the world, is quite a rare surname. The last name 西凡 is habitual in Maldives, where it is quite a rare surname, Qatar, and Sri Lanka. In absolute terms, the name is most common in Sri Lanka, Saudi Arabia, and Qatar. More frequently, 西凡 is the forename as well as the last name.