Across the world, 斯福 (Sifu 
, 斯福 ) is quite a rare mostly masculine, but seldom feminine forename. The forename 斯福 is habitual in Hong Kong, where it is a rare masculine name, Tanzania, where it is a rare epicene name, and Ethiopia. Measured by absolute frequency, it most frequently occurs in China, Ethiopia, and Tanzania. Much less frequently, 斯福 is the last name as well as the forename.