Other
- Independent Activities Period held at MIT every year immediately after winter vacation
- I'm Alan Partridge, a British sitcom
- Incident action plan, a structured plan of action in response to an emergency incident
- Instrument approach procedure, a published procedure for the final approach for landing at an airport under instrument flight rules
- Fraunhofer Institute for Applied Polymer Research, a German institute operated by the Fraunhofer Society
- International airport
Read more about this topic: IAP