Around the globe, Grislain (Grislain 
) is a rare male forename. The forename Grislain is habitual in Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare male name. Also, Grislain is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Grislain | Belgium, France, Australia, United States, Democratic Republic of the Congo |