Ōmachi may refer to:
Places Ōmachi, Nagano (大町市), a city Ōmachi, Saga (大町町), a town Ōmachi (Kanagawa) (大町), a district in the city of Kamakura
People with the surname , Japanese golfer , Japanese footballer Other uses Omachi (noodles), a noodle brand from Vietnam by Masan Group, also the brand name also used for Self-heating hot pot and Self-heating rice and formerly mashed potato.