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 | Cameroon, Morocco, Algeria, France, Democratic Republic of the Congo |
| Сулай | Russia, Kyrgyzstan, Belarus, Bulgaria, Ukraine |
| Soulai | Morocco, United States, India, Greece, Venezuela |