Last name Quessy-Leblanc (Quessy-Leblanc 
) , in the world, is an extremely rare family name. The family name Quessy-Leblanc is habitual in Northern America, particularly Canada, where it is an extremely rare surname. Parts of the name also exists independently as a last name Quessy, and a last name Leblanc.
| VARIANT | COUNTRY |
|---|---|
| Quessy-Leblanc | Canada |