Last name Rilly (Rilly 
) , throughout the world, is quite a rare cognomen. The last name Rilly is characteristic of Nigeria, where it is quite a rare surname, France, where it is a very rare surname, and Indonesia. Also, Rilly is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rilly | Philippines, India, France, Nigeria, Indonesia |
| claude rilly French linguist and archaeologist, FR (b. 1959) |
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| berthe de rilly (died 1964) |
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