Other
- IM the Supervisor, an album by Infected Mushroom
- Indian Mujahideen, an India-based militant Islamist group
- Individual medley, a type of swimming race
- Intermodulation distortion, the result of two (or more) signals of different frequencies being mixed together in a signal processing path, forming additional, unwanted signals
- Induction motor
- Information management
- Input method, a component that allows users to enter an expanded set of characters and symbols
- International Master, a title in chess
- Isle of Man, FIPS country code
- Inoffizieller Mitarbeiter, an informant for the Stasi
- Menajet, IATA airline designator IM
- Iron Man, a comicbook superhero
- Iron Maiden, pioneers of the New Wave of British Heavy Metal.
- the sumerogram of the storm-god, see Teshub