Io most commonly refers to: Io (moon), a moon of Jupiter Io (mythology), daughter of Inachus in Greek mythology, and lover of Zeus who was turned into a heifer
Io, IO, iO, I/O, i/o, or i.o. may also refer to:
Arts, entertainment and media Fictional elements Io, one of DC Comics' Amazons Scylla Io, one of Poseidon's Marine Generals in the Saint Seiya series A Dungeons & Dragons dragon deity Io Otonashi, a main character in the Japanese manga series Place to Place (Acchi Kocchi) Io Nitta, a character in the game Shin Megami Tensei: Devil Survivor 2
Gaming iO, a 2014 video game by Gamious IO Interactive, a Danish computer game developer
Music IO (German band) Io (English band) I_o (musician), an American DJ and record producer (1990–2020) i/o (Peter Gabriel album), 2023
Theatre and opera Io (opera), an unfinished acte de ballet (opera) by Jean-Philippe Rameau iO Theater (ImprovOlympic), a theater in Chicago, Illinois, dedicated to improvisational comedy IO West, a Los Angeles theater associated with the Chicago iO
Other uses in arts, entertainment and media EO (film) (original Polish title: IO), a 2022 Jerzy Skolimowski film Io (film), a 2019 Netflix film iO Digital Cable Service, a service offered by Cablevision International Organization, a peer-reviewed journal that covers the entire field of international affairs
Business and economics concepts Industrial and organizational psychology, the field of psychology that studies work, academic, and other organizational issues Industrial organization, the field of economics that studies the strategic behavior of firms, the structure of markets and their interactions Insertion order, a business document specifying the inventory goal of an advertising campaign Integrated operations, a term used in the petroleum industry describing new work processes and ways of working that have been facilitated by modern information and communication technologies Interest-only, a type of collateralized mortgage obligation (CMO) or mortgage-backed security
Businesses and organizations io (company), an artificial intelligence hardware company Bureau of International Organization Affairs, in the U.S. Department of State Government Printing Bureau (Macau), known in Portuguese as the Imprensa Oficial or "IO" Indonesian Airlines (IATA airline designator IO)
Language i.o., , Latin phrase meaning "respectively" ("in that order") Io (princely title), a particle of a title used by Moldavian and Wallachian Princes-regnant Ido language (ISO 639-1 language code IO), a constructed language Indirect object, the object that is the recipient of an action (by a verb) Yo (Cyrillic), also referred to as Io
Mythology Io (mythology), daughter of Inachus in Greek mythology, and lover of Zeus who was turned into a cow Io, an alternate spelling of the nereid Ino, later known as Leukothea, who in the Odyssey gave Odysseus a veil that allowed him to breathe underwater Io Matua Kore, in some Māori traditions the supreme god
People , Japanese shogi player , Japanese manga artist Io Shirai (born 1990), Japanese professional wrestler , Japanese manga artist iO Tillett Wright (born 1985), American artist, director, photographer, writer, film maker, activist, and actor Jean-Paul Appel, also known as Io, leader of the UFO religion Siderella
Places on Earth British Indian Ocean Territory, ISO 3166-1 alpha-2 code Io (island), an uninhabited islet near Crete, Greece Io, Norway, a village in Alver, Norway Mount Iō (disambiguation), name of several mountains in Japan Indian Ocean
Science and technology Astronomy 85 Io, an asteroid
Biology and medicine Io (gastropod), a genus of freshwater snail in the family Pleuroceridae Io (plant), a genus of plant in the tribe Senecioneae Automeris io, a moth species in North America Aglais io, the European peacock butterfly Intraosseous infusion, the medical process of introducing medication directly into the bone marrow Hawaiian hawk () Immuno-oncology, another term for cancer immunotherapy
Computing .io, the Internet country code top-level domain (ccTLD) for the British Indian Ocean Territory (popularized by video games with the .io code) Io (programming language), a pure object-oriented programming language IO.SYS, a system file in Microsoft DOS and Windows 95, 98 and ME Indistinguishability obfuscation, a cryptographic tool to obscure computer code Input/output, the collection of interfaces that different functional units of an information processing system use to communicate with each other
Other uses in science and technology Ionium (symbol Io), a claimed chemical element that was later realized to be thorium-230 Iodine monoxide (symbol IO) Image orthicon tube, a TV camera used between 1946 and 1968 Infinitely often, a mathematics term sometimes written "i.o."; see an example in set-theoretic limit
Other uses Investigating Officer, a member of law enforcement in the United Kingdom who heads an investigation Mitsubishi Pajero iO, a mini SUV model produced by Mitsubishi Motors IO (Oral-B), a series of electric toothbrushes by Oral-B
See also Ю or yu, a Cyrillic letter I/O (disambiguation) IOS (disambiguation) I0 (disambiguation) (the letter "I" followed by the digit "0") 10 (disambiguation) (the digit "1" followed by the digit "0") 1O (disambiguation) (the digit "1" followed by the letter "O")