Sis or SIS may refer to:
People
Michael Sis (born 1960), American Catholic bishop
Places
Sis (ancient city), historical town in modern-day Turkey, served as the capital of the Armenian Kingdom of Cilicia. Kozan, Adana, the current name of the Armenian town of Sis in Cilicia, Turkey Sis, Armenia, a village in Armenia Sis, Azerbaijan, a village in the Republic of Azerbaijan Sis, Iran, a city in East Azerbaijan, Iran Sis, Kurdistan, a village in Kurdistan, Iran Sis Rural District (Shabestar County), East Azerbaijan province, Iran Sis Rural District (Dehgolan County), Kurdistan province, Iran Mountains of Sis, a range of the Pre-Pyrenees
Intelligence Schengen Information System, in Europe Security Information Service, Czech domestic information intelligence agency known as BIS Secret Intelligence Service, the British foreign intelligence service, also known as MI6 Australian Secret Intelligence Service, Australia’s national intelligence service Canadian Security Intelligence Service, Canada's national intelligence service New Zealand Security Intelligence Service, an intelligence agency of the New Zealand government Finnish Security Intelligence Service, the intelligence agency of Finland in charge of national security Slovenská informačná služba, Slovak Intelligence Service Special Intelligence Service, a secret FBI intelligence agency operating in South America during World War II Signals Intelligence Service, the former United States Army codebreaking division Information and Security Service of the Republic of Moldova, the principal intelligence agency of Moldova. Serviço de Informações de Segurança, a Portuguese intelligence agency Survey of India Service, formerly the Great Trigonometric Survey Special Investigation Section, a tactical detective and surveillance unit of the Los Angeles Police Department Signals Intelligence Section, involved with the Magic project during World War II
Businesses Silicon Integrated Systems, an electronics manufacturing company Sports Information Services, a news service company Siemens IT Solutions and Services, a service provider which is part of Siemens AG headquarters SIS (motorbikes), a Portuguese manufacturer of motorcycles
Schools China Shekou International School, in Shekou Singapore International School, in Hong Kong South Island School, in Hong Kong
United States School of International Service, American University, Washington, D.C. Syracuse University School of Information Studies University of Pittsburgh School of Information Sciences Other schools SIS Swiss International School, a group of 15 private day schools in Switzerland, Germany and Brazil McGill University School of Information Studies, Canada School of International Studies of the Dresden University of Technology, Germany Singapore International School Mumbai, India Surabaya International School, Indonesia Seoul International School, South Korea Stockholm International School, Sweden Sharjah Indian School, United Arab Emirates
Other organizations Sisters in Islam, an organization based in Malaysia Swedish Institute for Standards Specialized Information Services, a division of the United States National Library of Medicine State Information Service, official media and public relations apparatus of the Egyptian state
Information processing SIS (file format), Symbian OS filename extension Short integer solution problem, a problem in lattice-based cryptography Single-instance storage, information-storage space-saving mechanism Strategic information system, a part of corporate strategy Student information system, a software application for education establishments to manage student data Sequential Importance Sampling
Biological sciences Small intestinal submucosa, transplantation tissue Second-impact syndrome, synergy in concussions Sex in space, an area of biological research
Healthcare Saline infusion sonography, a test used to diagnose uterine polyps Shoulder impingement syndrome, tendinitis of the shoulder
Technologies Selective inverted sink, frost protection device Safety instrumented system or safety instrumentation system Space Infrastructure Servicing, a robotic spacecraft for in-space refueling of communication satellites Sequential infiltration synthesis, a method to infiltrate polymers to create inorganic-organic hybrid materials
Other uses SIS (group), South Korean girl group founded 2017 SiS (TV series), a morning talk show SIS, a 2008 television film directed by John Herzfeld Supervised injection site , car ferry Singular isothermal sphere profile, a simple density distribution used in astronomy Silicon monosulfide, chemical formula SiS SIS (Soft Is Strong), 2024 EP by Katseye
See also Sister, a female sibling Sissy, a pejorative term for a boy or man who violates or does not meet the traditional male gender role Shimano Index Shifting, bicycle transmission design Single-image stereogram Superconductor-insulator-superconductor tunnel junction Swedish National Board of Institutional Care, abbreviated SiS SIS 18, an accelerator at the GSI Helmholtz Centre for Heavy Ion Research Special Investigations Section (disambiguation) Cis (disambiguation) Ciss (disambiguation)