Cognomen Sweg (Sweg 
) , in all the world, is a rare family name. The surname Sweg is characteristic of Angola, where it is a rare surname, New Zealand, where it is a very rare surname, and Indonesia. Measured by absolute frequency, it is commonest in Angola, Indonesia, and the United States. Much less frequently, Sweg is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sweg | Indonesia, Italy, Angola, Thailand, United States |