Last name Siffrard (Siffrard 
) , around the world, is a very rare family name. The cognomen Siffrard is habitual in the Dominican Republic, where it is a rare surname, Canada, where it is an extremely rare surname, and the United States. Measured by absolute frequency, it is the most numerous in the Dominican Republic, the United States, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Siffrard | Brazil, United States, Dominican Republic, Canada |