Ino or INO may refer to:

Arts and music I-No, a character in the Guilty Gear series of video games Ino (mythology), a queen of Thebes in Greek mythology INO Records, an American Christian music label Ino Yamanaka, a character in the anime/manga series Naruto INO, Greek artist

Medicine Internuclear ophthalmoplegia, a neurological pathological condition

Places Fort Ino, a former Russian coastal fortress in the Gulf of Finland Ino, Kōchi, a town in Kochi Prefecture, Japan Inó, the Hungarian name for Inău village, Someș-Odorhei Commune, Sălaj County, Romania Ino, Alabama, an unincorporated community, United States Ino, Wisconsin, an unincorporated community, United States Inongo Airport (IATA code) in Inongo, Democratic Republic of the Congo

Science and technology 173 Ino, an asteroid in the main Asteroid Belt India-based Neutrino Observatory, a particle physics research project Institut National d'Optique, a Canadian optical corporation Nitrosyl iodide, molecular formula INO Arduino microcontroller file extension

Other INO, ИНО, Иностранный отдел, First Chief Directorate of the USSR's KGB , 1851 clipper ship Shiori Ino, a Japanese murder victim iNo Mobile, a mobile phone company in Singapore