ist

• Bachelor's or master's degree in Information Science and Technology
• Graduate School / Faculty of Information Science and Technology, Hokkaido University, Japan
• Graduate School of Information Science and Technology, The University of Tokyo, Japan
• IST initiative of Stanford University, USA

• Ist (island), an island in the Adriatic Sea
• Istanbul Airport (IATA code)

• Institute of Science and Technology, Austria, IST Austria
• Institute of Science and Technology, Bangladesh, Dhaka
• Institute of Science and Technology, West Bengal, India
• Institute of Space Technology, in Islamabad, Pakistan
• International Socialist Tendency, grouping of Marxist organisations
• Instituto Superior Técnico, school of engineering, University of Lisbon, Portugal
• Institute for Simulation and Training, at the University of Central Florida, US
• International School of Tanganyika, Tanzania
• International School of Toulouse, a school in the south of France
• International Spartacist Tendency, a Trotskyist grouping
• International School Tripoli
• Penn State College of Information Sciences and Technology, Pennsylvania, USA

• IS Tighennif, a football club based in Algeria
• NBA In-Season Tournament, an annual basketball tournament

• Inappropriate sinus tachycardia, an uncommon type of cardiac arrhythmia
• Interrupt Stack Table, an AMD64 instruction set extension
• InterSwitch Trunk, Avaya enhancement to Link aggregation
• ist, the file extension for files created by the now-obsolete Adobe ImageStyler
• Information and Software Technology, a journal
• Interstellar Technologies, a Japanese rocket manufacturer

• Internal set theory, an axiomatic basis for part of non-standard analysis
• Inverse scattering transform, a method for solving some non-linear partial differential equations

• Indian Standard Time
• Irish Standard Time
• Israel Standard Time

• Istriot, a Romance language spoken in Croatia (ISO 639-3 language code ist)
• Toyota ist, a subcompact car made in Japan by Toyota

• Society for Imaging Science and Technology (IS&T), a research and education organization in the field of imaging
• -ism

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