Around the globe, Aldai (Alday 
, Aldai 
, Алдай 
) is a rare mostly male, but seldom girly forename. The first name Aldai is habitual in Sudan, where it is a rare boy's name, Brazil, where it is a very rare principally masculine, but very infrequently feminine name, and Kazakhstan, where it is a very rare unisex name. In absolute terms, it is the most numerous in Brazil, Sudan, and Indonesia. Much more frequently, Aldai is the last name as well as the forename.