Surname Calfayan (Calfayan 
) , around the globe, is a very rare family name. The last name Calfayan is habitual in Argentina, where it is a very rare surname, France, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Calfayan | Brazil, United States, France, Argentina |
| philippe calfayan particle physicist |
|