Worldwide, Sixbert (Sixbert 
) is quite a rare masculine forename. The given name Sixbert is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is quite a rare masculine name. Also, Sixbert is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sixbert | Tanzania, Venezuela, United States, Rwanda |
| sixbert macumi Burundian Anglican archbishop (born 1968) (b. 1968) |
|