Family name سواي (Sui 
, Suai 
, Swai 
) , in the entire world, is a widespread last name. The last name سواي is habitual in Mongolia, where it is a widespread surname, Tanzania, where it is quite a common surname, and Malaysia (explore the name in all countries). In absolute terms, this name is the most popular in China, Tanzania, and Mongolia. Much less frequently, سواي is the forename as well as the last name.