Sai or SAI may refer to:

Companies

* Science Applications Incorporated, original name of Leidos * ICAO designator for Shaheen Air, a Pakistani airline * Skandinavisk Aero Industri, a former Danish aeroplane manufacturer * Software Architects, Inc., a North American computer software company * Springfield Armory, Inc., an American firearm manufacturer and importer * Stability AI, an

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company, best known for its text-to-image model Stable Diffusion. * Supersonic Aerospace International, an American aerospace firm

Fiction

* Fujiwara no Sai, a character in ''Hikaru no Go'' media * Sai (''Naruto''), a character in ''Naruto'' media * Hinoki Sai, a character in the '' Betterman'' universe * Sai Akuto, protagonist of ''Ichiban Ushiro no Dai Maō'' * Sai Argyle, a fictional character in the manga and anime Gundam series * Sai, a term of respect in Stephen King's ''The Dark Tower'' universe * Sai no Hanaya (the Florist of Sai), a character in the ''Yakuza'' series

Government

* Solar America Initiative * Sports Authority of India, an Indian government body * Supreme audit institution, a government audit body

Media

* Sai music, a traditional style of music from southern Chad * '' Scaled and Icy'' (2021), sixth studio album by the American musical duo, Twenty One Pilots

Military

* Senior Army Instructor, in United States Army Junior ROTC * South African Infantry Corps * Sai (weapon), an Asian melee weapon

Places

* Sai, Orne, a French village and commune * Sai, Bhiwani, Haryana, India * Sai (Mawal), a village in Pune district, Maharashtra, India * Sai, Raebareli, a village in Uttar Pradesh, India * Sai, Aomori, a village in Japan * Lake Sai, one of the Fuji Five Lakes in Japan * Saï (island), on the Nile in Sudan * Sai River (disambiguation)

Organisations

* SAI Global, Australian standards organisation * Sathya Sai Organization, religious organization * Scout Association of Ireland, 1908–2004 * SAI Ambrosini, an Italian aircraft manufacturer * Society of American Indians, 1911–1923 * Society of Architectural Illustrators * Sweet Adelines International, women barbershop singers

People

Groups

* Sai people or Li people, a minority Chinese ethnic group * Sai (caste)

Given name

* Sai Kiran Adivi, Indian film director and producer * Sai Prathap Annayyagari (born 1944), Indian politician * Sai Bennett (born 1990), British actress and model * Sai Deodhar (born 1984), Indian television actor * Sai Mauk Kham (born 1950), ethnic Shan politician and one of the two vice presidents of Myanmar * Sai Kiran (born 1978), Indian actor who works in the Telugu film industry * Sai Wing Mock (1879–1941), New York Chinese criminal and leader of the Hip Sing Tong * Sai Pallavi (born 1992), Indian actress * Sai Paranjpye (born 1938), Indian movie director and screenwriter * Sai Sam Tun, owner of the ''Loi Hein Co, Ltd.'' of Myanmar * Sai Yinjiya (born 1976), male Chinese freestyle wrestler

Surname

* Anand Sai, Indian art director who works for Telugu films * Manoj Sai, Indian cricketer * Marlene Sai (born 1941), Hawaiian singer * Nand Kumar Sai (born 1946), Indian politician from Chhattisgarh state * Obodai Sai (born 1984), Ghanaian boxer * Sai On (1682–1761), scholar-official of the Ryūkyū Kingdom * Ryouji Sai (born 1980), Japanese professional wrestler * Tiaoalii Fauagiga Sai, American Samoan politician * Veer Surendra Sai (died 1884), Indian freedom fighter * Vishnudeo Sai (born 1964), Chief Minister of Indian state of Chhattisgarh * Yōichi Sai (born 1949), Japanese film director

Other people

* Sai, real name Simon Wimmerberg, DJ/producer with the band Labyrint * Sai Htee Saing (1950–2008), Burmese singer and songwriter of Shan descent * Sai Maa (born 1953), Mauritian guru

Research institutes

* University of Texas at Austin South Asia Institute, USA * South Asia Institute (Germany) * Stan Ackermans Institute, in the Dutch city of Eindhoven * Sternberg Astronomical Institute, a division of Moscow State University in Russia

Science and technology

* SAI (software), painting software * Serving area interface, or ''service'' area interface, an outdoor telecommunications cabinet * Silent Aircraft Initiative, Cambridge-MIT Institute project *Single-collateral Dai (cryptocurrency), discontinued * Stratospheric aerosol injection in geoengineering * Subject–auxiliary inversion in linguistics

Other uses

* Sai (deity), an Egyptian god * Steering Axis Inclination, a secondary wheel alignment measurement * Toyota Sai, alternate name for the Lexus HS hybrid car * Self-assessed intelligence