ISR

ISR may refer to:

Publications

Information Systems Research, an academic journal in the information systems discipline
International Socialist Review (disambiguation), any of several U.S. publications
- ISR (1900), a monthly socialist magazine published from 1900 until 1918
International Studies Review, an academic journal of the International Studies Association
Israel Studies Review, an academic journal of the Association for Israel Studies
International Statistical Review, a journal of the International Statistical Institute

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
Institute for Social Research – CSUS, a research institution affiliated with California State University, Sacramento

Injection site reaction, a (usually adverse) reaction to an injection
In-stent restenosis, restenosis or blockage of a blood vessel after a stent has been implanted

Interrupt handler or interrupt service routine, a software routine that is executed in response to an interrupt
In-Service Register or Interrupt Service Register, a type of register in a Programmable Interrupt Controller
Integrated Service Router, a series of Cisco routers

Intelligence, surveillance and reconnaissance, acquisition and processing of military intelligence
JFCC ISR, a subordinate command of the United States Strategic Command

ISR Racing, a racing team from Czech Republic
In-situ recovery, a mining technique
Institute for Strategy and Reconciliation, a think tank and international relief and development organization
Institutional and Scientific Relations, a Directorate of the European Commission
International Socialist Resistance, a youth organization of the Committee for a Workers' International
International Star Registry, a company which publishes and sells the Your Place in the Cosmos book
Ipoh-KL Sentral Route, an intercity train service in Malaysia
Israir (designator ISR), an Israeli airline
International Search Report, a procedure of international patent law under the Patent Cooperation Treaty
Inuvialuit Settlement Region, a region in the Northwest Territories, Canada