Across the world, Hiyao (Hiyao 
) is an extremely rare unknown gender first name. Much more frequently, Hiyao is the last name as well as the forename.
Sid, Raymart, Rodelyn, Roberto, Ronaldo, Richard, Rizalyn, Dolores, Warfred, Severino, Patricia, Reynaldo, Rizaldie, Estrella, Fernando, Christian, Katherine, Gracielle, Jefferson, Elizabeth, Vernadeth, Anna Marie, Paulina, Katrina, Czarina, Carmina, Jay, Rose, Joel, Alice, Carla, Karen, Grace, Elena, Aldrin, Arturo, Aaron Paul, Aurora, Pamela, Glenda, Jayron, Jeanie, Neneth, Evelyn, Maricel, Sheilla, Armando, Carlota, Cariza, and Cherrynell