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