IRM

IRM may refer to:IERS Reference Meridian Illinois Railway Museum Illinois Reserve Militia, state defense force active during World War II Bureau of Information Resource Management, responsible for information technology of the U.S. Department of State Information Rights Management Intermediate Restorative Material (Dentistry) Zinc oxide eugenol L'Institut Royal Météorologique de Belgique Interference reflection microscopy, a microscopy method used to image adherent cells Internal Revenue Manual, an official compendium of internal guidelines for personnel of the United States Internal Revenue Service International Review of Mission, a quarterly academic journal International Roaming MIN assigned by IFAST IRM (album), by Charlotte Gainsbourg Iron Mountain Incorporated, a data storage company based in Boston, Massachusetts ICAO designator for Mahan Air, an Iranian airline Islamic Republic of Mauritania Irish Republican Movement