All over the world, Isais (Isais 
) is quite a rare predominantly boy's, but scarcely female first name. The given name Isais is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is quite a rare masculine name, Peru, where it is a rare boy's name, and Guatemala. Not in comparison with a country's population, it is commonest in Mexico, Peru, and Philippines. More frequently, Isais is the last name as well as the forename.