In all the world, ศิวิลัย (ศิวิลัย 
, Civilai 
) is a rare primarily feminine, but very infrequently masculine forename. The forename ศิวิลัย is habitual in South-eastern Asia, particularly Thailand, where it is a rare principally feminine, but scarcely male name. More frequently, ศิวิลัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| ศิวิลัย | Thailand |
| Civilai | Australia, Thailand, United States |