Family name Soulai (Soleil 
, Сулай 
, Soulai 
) , in the world, is quite a common cognomen. The cognomen Soulai is habitual in Cameroon, where it is quite a rare surname, Algeria, and Mauritius. Not in comparison with a country's population, this name is the most popular in Algeria, France, and Cameroon. Also, Soulai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Soleil | Morocco, France, Democratic Republic of the Congo, Cameroon, Algeria |
| Сулай | Kyrgyzstan, Russia, Bulgaria, Belarus, Ukraine |
| Soulai | Morocco, Greece, United States, India, Venezuela |