Cognomen Rillet (Rillet 
) , worldwide, is a very rare family name. The last name Rillet is habitual in France, where it is a rare surname, New Zealand, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it most frequently occurs in France, the United States, and India. Very seldom, Rillet is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rillet | Philippines, India, France, New Zealand, United States |
| rémy rillet French politician, FR (b. 1956) |
|