Family name ศิลานนท์ (Sinon 
, Silanon 
, ศิลานนท์ ) , worldwide, is quite a rare cognomen. The family name ศิลานนท์ is habitual in Seychelles, where it is a common surname, Burkina Faso, where it is quite a rare surname, and Philippines. Not in comparison with a country's population, it is commonest in Philippines, Burkina Faso, and the United States. Very seldom, ศิลานนท์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sinon | Seychelles, Philippines, United States, Democratic Republic of the Congo, Burkina Faso |
| Silanon | Thailand, China, Philippines |
| ศิลานนท์ | Thailand |