Family name Francois-Saint-Cyr (Francois-Saint-Cyr 
) , throughout the world, is a very rare cognomen. The family name Francois-Saint-Cyr is habitual in France, where it is a very rare surname, Canada, where it is an extremely rare surname, and the United States. Parts of the name also exists independently as a first name Francois, a first name Saint, and a first name Cyr.
| VARIANT | COUNTRY |
|---|---|
| Francois-Saint-Cyr | Canada, France, United States |