Family name Wellu (Wellu 
) , in the entire world, is a rare surname. The cognomen Wellu is habitual in Indonesia, where it is a very rare surname, Myanmar, and the United States, where it is an extremely rare surname. Likewise, Wellu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wellu | Indonesia, Finland, Nigeria, Tanzania, Myanmar |