ISR

• Institute for Strategy and Reconciliation
• Institutional and Scientific Relations, of the European Commission
• International Star Registry, a company selling the right to name stars
• ISR International School on the Rhine, Germany

• ISR, a socialist magazine, 1900-1918
• Information Systems Research
• International Socialist Review (disambiguation), U.S. publications
• International Statistical Review
• International Studies Review
• Israel Studies Review

• In-stent restenosis, recurrence of stenosis after stenting
• Plant-induced systemic resistance, plant response to infection

• In-Service Register or Interrupt Service Register, in a PIC
• Interrupt service routine

• In-situ recovery, a mining technique
• Incoherent scatter radar, for studying the ionosphere
• Intersecting Storage Rings, a particle collider at CERN
• Injection site reaction, a reaction that occurs initially at the site of an injection or infusion

• ISR, country code for Israel
• Indiana Southwestern Railway, US
• Inuvialuit Settlement Region, Northwest Territories, Canada
• Ipoh-KL Sentral Route, a train service, Malaysia
• ISR Racing, a team from Czech Republic
• Israir (designator ISR), an Israeli airline
• Italian Social Republic, 1943–1945
• Joint Functional Component Command for Intelligence, Surveillance and Reconnaissance, of the US Strategic Command
• Intelligence, surveillance and reconnaissance, in military intelligence
• International Search Report, in international patent law

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