Cognomen Biggun (Biggun 
) , around the world, is a very rare surname. The surname Biggun is habitual in Australia, where it is a very rare surname, the United Kingdom, and the United States, where it is an extremely rare surname. Very seldom, Biggun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Biggun | Australia, United States, United Kingdom, India |