Omi or OMI may refer to:
Organisations Optical Mechanics, Inc., a US telescope company Ottico Meccanica Italiana, an Italian company Original Musical Instrument Company, manufacturers of resonator guitars Open Music Initiative, a digital rights framework for the music industry OMI Rotterdam, a foundation from Rotterdam Missionary Oblates of Mary Immaculate, a Catholic missionary order
Places Omi Shrine, in Ōtsu, Shiga Prefecture, Japan Ōmi Province, a former province of Japan Omi, Nagano, a village in Japan Omidiyeh Air Base (IATA code: OMI), Iran
Science and technology HtrA serine peptidase 2 (symbol: OMI), an enzyme encoded by the HTRA2 gene Oocyte maturation inhibitor, created by follicular cells Ozone monitoring instrument, on the AURA satellite Outer, Middle and Inner, types of VHF marker beacon used in navigation
Computing OMI cryptograph, a cipher machine produced by Ottico Meccanica Italiana Open Management Infrastructure, an open-source CIM/WBEM management server Original Machine Interface, an instruction format used in the IBM i operating system Open Memory Interface, used for example in IBM Power10
People Omi (singer) (born 1986), Jamaican reggae singer Omi (given name), including a list of name-holders , Japanese politician , Japanese footballer , Japanese football player , Japanese actor , Japanese footballer , President of the Japan Community Health Care Organization , Japanese singer and voice actress , Japanese scholar and writer , is a former Japanese football player Yurie Omi (born 1988), Japanese television announcer and news anchor
Other uses Eight Views of Ōmi, traditional scenic views of Ōmi Province Omi (title), an ancient Japanese hereditary title Ōmi Code, a collection of laws compiled in 668AD in classical Japan Omi, protagonist of the animated TV series Xiaolin Showdown Omi language, spoken in the Democratic Republic of the Congo
See also Horace Ridler (1882–1965), professional freak and sideshow performer known as "The Great Omi"