Surname Siligan (Siligan 
) , all around the world, is a very rare family name. The surname Siligan is characteristic of Austria, where it is a rare surname, Philippines, where it is an extremely rare surname, and Canada. Very seldom, Siligan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siligan | Austria, Philippines, Canada, Thailand |