Cognomen Swalla (Swalla 
) , around the globe, is a rare surname. The surname Swalla is habitual in Tanzania, where it is a very rare surname, the United States, and Nigeria, where it is an extremely rare surname. Much less frequently, Swalla is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Swalla | Nigeria, United States, Tanzania, India, Pakistan |
| billie j. swalla biologist and professor of biology, US |
|