Globally, สิวิลัย (สิวิลัย 
, Civilai 
) is a very rare female first name. The first name สิวิลัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare feminine name. Likewise, สิวิลัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| สิวิลัย | Thailand |
| Civilai | United States, Thailand, Australia |