Cognomen Sila-An (Sila-An 
) , in the world, is an extremely rare surname. The last name Sila-An is characteristic of South-eastern Asia, particularly Philippines, where it is an extremely rare surname. Likewise, Sila-An is the forename as well as the last name. Parts of the name also exists independently as a first name Sila, and a last name An.
| VARIANT | COUNTRY |
|---|---|
| Sila-An | Philippines |