Family name Riolan (Riolan 
) , all over the world, is a very rare last name. The surname Riolan is characteristic of Mexico, where it is an extremely rare surname, Venezuela, and Malaysia. More frequently, Riolan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Riolan | Philippines, Mexico, United States, India, Brazil |
|
jean riolan French physician (1539-1605), FR (b. 1539) |
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jean riolan French medical doctor and anatomist (1580-1657), FR (b. 1577) |
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