Family name Mercielle (Mercielle 
) , all around the world, is a rare cognomen. The surname Mercielle is characteristic of Sub-Saharan Africa, particularly Cameroon, where it is a rare surname. More prevalently, Mercielle is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mercielle | Philippines, Canada, Cameroon, Brazil, Democratic Republic of the Congo |