ISR

ISR may refer to:

Publications

• Information Systems Research, an academic journal in the information systems discipline
• International Socialist Review, a Socialist magazine published in the U.S.
• International Statistical Review, a journal of the International Statistical Institute

Science

• Incoherent scatter radar, a ground-based technique for studying the ionosphere
• Intersecting Storage Rings, a particle collider at CERN
• Initial State Radiation, in particle physics

Computers

• Programmable Interrupt Controller or interrupt service register, a register used for indicating which interrupts are in progress
• Interrupt handler or interrupt service routine, a software routine that is executed in response to an interrupt
• Information, Storage and Retrieval
• In-Service Register, a computer science term referring to a register used to indicate which interrupts are in progress.
• Interrupt Service Register
• Integrated Service Router, a series of Cisco routers

Countries

• Italian Social Republic, a client state of Nazi Germany
• ISR, Country code for Israel, an Asian country

Military

• Intelligence, Surveillance and Reconnaissance (disambiguation), i.e., Joint Functional Component Command for Intelligence, Surveillance and Reconnaissance (JFCC ISR), a subordinate command of the United States Strategic Command
• ISR, for Intelligence, Surveillance, and Reconnaissance, in a military context. See ISTAR

Other uses

• Injection site reaction, a (usually adverse) reaction to an injection/shot such as erythema, ecchymosis (bruise), inflammation and pain
• International Star Registry
• Institutional and Scientific Relations Directorate of the European Union
• International Socialist Resistance
• Israir, an Israeli airline
• Institute for Strategy and Reconciliation, an independent, non-profit think tank and international relief and development organization headquartered in Washington DC
• Institute for Social Research - CSUS, a research institution affiliated with California State University, Sacramento
• ISR, or In-Stent Restenosis, renewed blockage of a blood vessel after a stent has been implanted
• International Search Report, an element of patent law. See Patent Cooperation Treaty
• ISR, or Internal Sales Representative, used in business