Across the world, Guyslain (Guyslain 
) is an extremely rare epicene forename.
| VARIANT | COUNTRY |
|---|---|
| Guyslain | France, United States, South Africa, Democratic Republic of the Congo |
| guyslain naves Ph.D. Université Joseph Fourier Grenoble I 2010 (b. 1983) |
|