Ono (小野) and Ōno (大野) is a Japanese surname. Ono means "small field" and Ōno means "large field". Both are used as Japanese surnames. The following people were born in Japan, unless otherwise noted:
Ono no Azumabito (d. 757), a Japanese court official during the Nara period, governor of Bizen provinceŌno no Azumabito (d. 742), an official, during the same period, who held the Imperial position of Chinjufu-shogunChizu Ono, a photographerDaisuke Ono, a voice actorFrank H. Ono, a Japanese-American soldierŌno Harunaga, a general under Toyotomi HideyoriHitoshi Ono, a rugby playerJiro Ono (chef) (born 1925), chef of Sukiyabashi Jiro, a three-Michelin-starred Japanese restaurantKazushi Ono, an orchestra and opera conductorKen Ono, a Japanese-American mathematicianKōsei Ono, a rugby playerŌno Kurobei, a chief retainer of the Banshū Akō DomainLisa Ono, a Japanese-Brazilian bossa nova singerMachiko Ono, actressMarina Ōno, a voice actressMasatoshi Ono, a rock/heavy metal singerMinoru Ōno, the real name of Saburō Kitajima, an Enka singerRyōko Ono, a voice actressRyumo Ono, Japanese basketball playerSanta J. Ono, a Japanese-American biologist, university administrator and Board memberShinji Ono, a footballerShinjiro Ono, a former deputy commissioner of the Japan Patent OfficeShunzo Ono, a footballerSusumu Ōno, a linguistTakashi Ono (born 1931), a gymnast and Olympic medalistTakashi Ono (judoka) (born 1980), a martial arts practitionerTakashi Ono (mathematician) (born 1928), number theoristToshihiro Ono, a manga artistYoko Ono, a musician, artist, feminist and peace activist who married John LennonYūki Ōno, a wrestler