Yi language (ISO 639-1 code) II – (s) Two (in Roman numerals) IICA – (i) Inter-American Institute for Cooperation on Agriculture IIE – (i) Innovative Interstellar Explorer iii – (s) Sichuan Yi language (ISO 639-2 code) III – (s) Three (in Roman numerals) IIMSS – If I May Say So IIRC – If I Remember Correctly, If I Recall Correctly IISS – (i) International Institute for Strategic Studies IIT – (i) Illinois Institute of Technology – Indian Institutes of Technology – Indiana Institute of Technology IITM – (i) Image Institute of Technology & Management – Indian Institute of Technology Madras – Indian Institute of Tropical Meteorology I/ITSEC – (a) Interservice/Industry Training, Simulation and Education Conference ("eye-it-sec" or "it-sec") IJ IJN – (i) Imperial Japanese Navy (World War II) IJWP – (i) Interim Joint Warfare Publication IK ik – (s) Inupiaq language (ISO 639-1 code) IKEA – (a) Ingvar Kamprad (the company's founder), Elmtaryd (the farm where he was born and raised), Agunnaryd (a village and parish near the farm) iku – (s) (s) Inuktitut language (ISO 639-2 code) IM IM (s) Isle of Man (FIPS 10-4 territory code) (i) Instant Message (Internet speech) IMA (i) Intermediate Maintenance Activity Institute of Mathematics and Applications – (i) International Migratory Bird Day IMDb – Internet Movie Database IME - (i) In My Experience IMF (i) id music file/id's music format (audio file format) Impossible Missions Force, the protagonist organization in the Mission: Impossible media franchise International Monetary Fund (the most common use for the initialism) IMHO – (i) In My Humble/Honest Opinion, cf. IMO IMIST AMBO – used to facilitate an informed clinical handover between paramedics, emergency department staff or other healthcare similar to SBAR: Identification, Method of Injury, Index of concern, Signs, Treatment, Allergies, Medication, Background, and Other IML – (i) International Mister Leather IMLAST – (i) International Movement for Leisure Activities in Science and Technology – see MILSET IMNM - (i) - Immune-mediated necrotizing myopathy a rare, but serious ADR of statins IMNSHO – (i) In My Not So Humble Opinion IMO (in my opinion) – (i) In My Opinion, also "imo", cf. IMHO IMPAC – (a) International Merchant Purchase Authorization Card IMPACT – (a) International Medical Products Anti-Counterfeiting Taskforce IMPATT – (p) IMPact Avalanche Transit Time diode IMPT – (i) Institute of Maxillofacial Prosthetists and Technologists IMR – (i) Inzhenernaya Mashina Razgrazhdeniya (Russian Инженерные Машины Разграждения, "Engineer Vehicle Obstacle-Clearing") †