Isaï is a ♂ male name.
Isaï is a French variant of the biblical name Jesse, which is of Hebrew origin (Old Testament: Jesse is the father of King David).
Isaï means “gift of God” (from Hebrew “sháy/שַׁי” = present/gift), but as well “God exists” (from Hebrew “yésh/יֵשׁ” = there is/there exist).