Cognomen 斯薇 (斯薇 
, Siwe 
) , all over the world, is quite a rare surname. The cognomen 斯薇 is characteristic of Botswana, where it is quite a rare surname, Cameroon, and Sweden, where it is a rare surname. Measured by absolute frequency, it is commonest in Cameroon, China, and South Africa. Likewise, 斯薇 is the forename as well as the last name.