ISS is an abbreviation for the International Space Station. ISS may also refer to: Organisations Institute for Science and Society, an academic department at the University of Nottingham, England Institute for Security Studies, Pretoria, South Africa studying crime, corruption, and conflict in Africa Institute of Social Studies, an international institute in The Hague, the Netherlands International Social Service, a charitable, non-governmental organisation Information Systems & Services, a former part of the UK Ministry of Defence Internal Security Service, national security intelligence agency of Oman Istituto Superiore di Sanità, the Italian National Institute of Health Intercollegiate Socialist Society (1905–1921), an American political youth organization Businesses ISS A/S, a Danish service company Institutional Shareholder Services, a proxy advisory firm Internet Security Systems, a security software vendor Arts, entertainment, and media I.S.S. (film), an upcoming American film International Staff Songsters, the flagship choir of the Salvation Army International Superstar Soccer, a video game series ISS (2000 video game) Idea Star Singer, a Malayalam music reality show by Asianet TV Imperial Star Ship, a fictional spaceship designation prefix in Star Treks Mirror Universe Education ISS International School, an international school in Singapore In-school suspension, a form of discipline used in some schools Instituto San Sebastián Yumbel, Chilean school in Yumbel, Chile Science and technology Ion scattering spectroscopy or low-energy ion scattering, a materials analysis method Imaging Science Subsystem, Cassini–Huygens space probe instruments Instruction set simulator, a computer program that simulates a processor International Seismological Summary, an earthquake catalog Input Shaft Speed sensor, a sensor that measures the rotational speed of the input shaft in a vehicle Medicine Idiopathic short stature, an unexplained short stature Injury Severity Score International Staging System, for the severity of multiple myeloma Other uses Independent Subway System, a former rapid transit rail system in New York City, US Islamic State in Somalia, a faction of the Islamic State of Iraq and the Levant ISS Hockey (International Scouting Services), ice hockey scouting service Air Italy (2005–2018) (ICAO: ISS), a defunct Italian airline IShowSpeed (born 2005), American YouTuber See also IIS (disambiguation) ISIS (disambiguation) ja:ISS