Family name Khmais (Khmais 
) , in the entire world, is a rare surname. The family name Khmais is characteristic of Tunisia, where it is quite a rare surname, Bahrain, where it is a rare surname, and Sudan. Measured by absolute frequency, it most frequently occurs in Northern Africa, particularly Tunisia, Egypt, and Sudan. More frequently, Khmais is the forename as well as the last name.