Cognomen Duhac (Duhac 
) , worldwide, is a rare family name. The cognomen Duhac is habitual in Philippines, where it is a rare surname, and the United States, where it is an extremely rare surname.
Fe, Dosano, Lorena, Judith, Vivian, Urbano, Marites, Marivic, Martino, Bechelo, Reymund, Donmarc, Domingo, Gerlita, Jeffrey, Vicente, Orlando, Queenie, Mary Ann, Madeline, Anacleta, Raymundo, Ronald, Roseta, Shaira, Moises, Alma, Beth, Riel, Jade, Tony, Odog, Marty, Ramil, Galem, Levie, Reynante, Jonah, Jesus, Julie, Erwin, Ethel, Wilma, Marcon, Marlon, Marlyn, Marvin, Mailee, Jesso, and Jesielyn