Worldwide, Mengwai (Mengwai 
) is an extremely rare masculine first name. Much more frequently, Mengwai is the last name as well as the forename.
Sam, Seputla, Katlego, Kgatledi, Petunia, Dikgang, Tauentsho, Thakane, Thabiso, Thereso, Nomonde, Ntwampe, Zebulon, Seotlologe, Baleseng, Kamogelo, Libuseng, Tryphina, Mathinthe, Sebutjoeledi, Boitumelo, Ramoraswi, Mahlale, Matlale, Fikile, Tebogo, Ali, Yip, Mpho, Kolo, Mogau, Sarah, Lucky, Taelo, Thabo, Tonny, Mathabathe, Norma, Neria, Isaac, Malebo, Savela, Sepadi, Sepedi, Bontle, Karabo, Daniel, Joshua, Nomta, and Ramatsimele