Family name Gahay (Gahay 
) , across the world, is a rare cognomen. The family name Gahay is habitual in Philippines, where it is a rare surname, and India, where it is an extremely rare surname. Much less frequently, Gahay is the forename as well as the last name.
Alla, Perlita, Rogelio, Richard, Genelyn, Lourdes, Lourdez, Jovelyn, Jenalyn, Enecita, Francis, Monalisa, Annbelle, Arcelita, Chereyln, Remedios, Leonardo, Vergelio, Marianita, Mary Jane, Annabelle, John Mark, Paquito, Charlie, Michael, Minaben, Raul, Rico, Jose, Joan, Juvy, Ronie, Ronel, Dario, Gun'S, Elvie, Esterlita, Helen, Sailya, Abelio, Pepito, Rosita, Dexter, Jobert, Julito, Imelda, Marivic, Merlita, Merlyn, and Flordeliza