In the entire world, Onozaki (Onozaki 
) is an extremely rare unknown gender first name. Much more prevalently, Onozaki is the last name as well as the forename.
Mr, Masao, Morio, Misao, Shoji, Seizo, Akira, Bunyu, Karen, Kazuo, Kaoru, Komyo, Kohei, Kenji, Keita, Kunio, Lucas, Jitsu, Takao, Takeo, Tomio, Teruo, Marie, Yuji, Yuki, Yuri, Ko, Go, To, Yu, Sho, Aya, Aoi, Ken, Kyu, Jun, Norio, Moto, Chie, Kozo, Koji, Juan, Toru, Eiki, Eiji, Fumi, Ikuo, Ichi, Akio, and Nobuo