ICR may refer to:

Biology

  • Idiopathic condylar resorption, a temporomandibular joint disorder
  • Immunological constant of rejection, Immunology concept relating to tissue rejection
  • Implanted cardiac resynchronization device, in cardiology
  • Imprinting Control Region, genetic imprinting

Electronics and physics

  • Inductance (L), Capacitance (C), Resistance (R), see LCR meter and RLC circuit
  • Instant centre of rotation, the point in a body undergoing planar movement that has zero velocity at a particular time
  • Intelligent character recognition, advanced OCR
  • Ion cyclotron resonance, a physics phenomenon in cyclotron particle acceleration

Organizations

  • Catholic University of Rennes (Institut catholique de Rennes), a French Catholic university
  • Institute of Cancer Research, a college within the University of London
  • Institute for Centrifugal Research, imaginary company created by Till Nowak as the impetus behind The Centrifuge Brain Project
  • Institute of Cetacean Research, a Japanese institution
  • Institute for Comparative Research in Human and Social Sciences, a Japanese institution in humanities and social sciences
  • Institute for Creation Research, a creationist organization in Dallas, Texas
  • Institute for Cultural Research, a London-based educational charity founded by Idries Shah
  • International Care & Relief, international development charity
  • International Rescue Committee, a global humanitarian, relief, and refugee-assistance non-government agency
  • Iraqi Council of Representatives, a political council of Iraq
  • Central Institute for Restoration (Istituto Centrale per il Restauro), art conservation institute in Rome
  • Romanian Cultural Institute (Institutul Cultural Român)

Other uses

  • Income-contingent repayment, a payment plan based on the payer's income
  • Industrial Cases Reports, a law report
  • Inishowen Community Radio (ICR FM), a local radio station broadcasting on the Inishowen Peninsula in Ireland
  • Intercolonial Railway, a historic Canadian railway
  • Interest coverage ratio, a measure of a firm's ability to pay interest on outstanding debt
  • International Civilian Representative for Kosovo, a civilian officer
  • Islander Creole English, ISO 639-3 code
  • Inter-City Railcar, class of 63 Irish diesel multiple units
  • FAA location identifier for Winner Regional Airport, Winner, South Dakota US