Family name Debai (Debai 
) , across the world, is a rare cognomen. The family name Debai is habitual in Ivory Coast, where it is a rare surname, Algeria, and France, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Ivory Coast, India, and Algeria. More prevalently, Debai is the forename as well as the last name.