| IMO | I Moved On 
| Others |
| IMO | I My Opinion
| Others |
| IMO | I'm Moving On
| Others |
| IMO | Ice Man's Obituary
| Others |
| IMO | Icelandic Meteorological Office
| Others |
| IMO | Identity Market and Offering
| Others |
| IMO | Idiot Must Obey
| Others |
| IMO | Ignition Module
| Others |
| IMO | Ignition Monitor
| Others |
| IMO | Im My Opinon
| Others |
| IMO | IMO In My Opinion
| Others |
| IMO | In Memory Of
| Others |
| IMO | In My Office
| Others |
| IMO | In My Opening
| Others |
| IMO | In My Opinion
| Others |
| IMO | In My Opinion & International Maritime Organization
| Others |
| IMO | In My Opinnion
| Others |
| IMO | In My Opnion
| Others |
| IMO | In My Oppinion
| Others |
| IMO | In My Orifice
| Others |
| IMO | In My Own
| Others |
| IMO | Independent Market Operator
| Others |
| IMO | Independent Marketing Organization
| Others |
| IMO | Independent Monitoring Organization
| Others |
| IMO | Industriemotor
| Others |
| IMO | Information Management Office
| Others |
| IMO | Information Management Officer
| Others |
| IMO | Input, Manipulation, and Output
| Others |
| iMO | Instant Money Order
| Others |
| IMO | Institute of Men's Organizations
| Others |
| IMO | Instruction Management Office
| Others |
| IMO | Instructional Management Office
| Others |
| IMO | Insurance Marketing Organization
| Others |
| IMO | Integrated Mathematical Oncology
| Others |
| IMO | Integration Management Office
| Others |
| IMO | Intelligent Medical Object
| Others |
| IMO | Intelligent Medical Objects
| Others |
| IMO | Interim Mode of Operation
| Others |
| IMO | International Mail Order
| Others |
| IMO | International Maratime Organisation
| Others |
| IMO | International Marine Organization
| Others |
| IMO | International Maritime Organisation
| Others |
| IMO | International Maritime Organization
| Others |
| IMO | International Mathematical Olympiad
| Others |
| IMO | International Mathematical Olympiads
| Others |
| IMO | International Mathematics Olympiad
| Others |
| IMO | International Meteor Organization
| Others |
| IMO | International Meteorological Organization
| Others |
| IMO | International Miners' Organization
| Others |
| IMO | Internet Mail Only
| Others |
| IMO | Internet Multimedia And Office
| Others |
| IMO | Internet Multimedia Office
| Others |
| IMO | Into Members Only
| Others |
| IMO | Intravenous Membrane Oxygenator
| Others |
| IMO | Intrepid Marine Observer
| Others |
| IMO | Irish Medical Organisation
| Others |
| IMO | Irrational Motivated Opinion
| Others |
| IMO | Itthankudi Manikanda Odhuvaar
| Others |
| IMO | Of In My Opinion
| Others |
| IMO | Zemio Airport
| Others |