IMR may refer to:
Organisations Imperial Military Railways, of British forces in South Africa 1898-1901 Isle of Man Railway Industrija Motora Rakovica International Mineral Resources Institute for Materials Research, or Kinken in Japan Institute of Marine Research, in Norway International Marketing Review
Science, technology and engineering Infant mortality rate Interrupt mask register, in computing is used to disable interrupts Interlocking machine room of the London Underground signalling system Inverse Mills ratio, in statistics and graphs Improved military rifle powder, a type of gunpowder IMR vessel (Inspection, Maintenance and Repair) Immediate mode rendering
Other uses Ideomotor response, in hypnosis and psychological research Individual ministerial responsibility, a political convention in Parliamentary systems of Government Institutional mode of representation, in film theory In Medias Res (band), Vancouver, Canada International Migration Review, quarterly peer-reviewed academic journal published by Wiley-Blackwell
See also IMR-1, 2, and 3, armored engineering vehicles (Inzhenernaya mashina razgrazhdeniya), based on the Russian T-55, T-72, and T-90 tanks, respectively