Family name Mahtieu (Mahtieu 
) , across the world, is an extremely rare surname. The last name Mahtieu is characteristic of Argentina, where it is an extremely rare surname, Canada, and the United States. More prevalently, Mahtieu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mahtieu | Argentina, Canada, France, United States |