- Intelligent Message Filter , server-side message filtering, heuristics-based message analysis
- International Metalworkers' Federation , a global union federation
- International Monetary Fund , the international organization entrusted with overseeing the global financial system
- International Music Feed , a music video television network
- Initial Mass Function , in stellar astronomy
- television series and series of movies
- Inert Matrix Fuel , a Nuclear Fuel form employing non- Fertile Material to efficiently reduce Plutonium stockpiles in a peaceful fashion
- IMF (music) , music file format used in video games
- Internationale Medien und Film, see Intermedia (production Company)
- Intramuscular Fat , in cuts of meat.
- Interplanetary Magnetic Field , in Space Physics
- Inframammary Fold
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