Across the world, Sylex (Sylex 
) is a very rare dominantly male, but infrequently female given name. The first name Sylex is habitual in South-eastern Asia, particularly Philippines, where it is an extremely rare largely masculine, but uncommonly female name. Much less frequently, Sylex is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sylex | Belgium, Philippines, United Kingdom, Spain, France |