OSIT
| Acronym | Definition |
|---|---|
| OSIT | Open Source Intelligence Techniques (Michael Bazzell book) |
| OSIT | On-Site Inspection Team |
| OSIT | Operational Strategies Implementation Team (Australian Strategic Air Traffic Management Group) |
| OSIT | Oulun Selittämättömien Ilmiöiden Tutkimusseura (Finnish: Oulu Muddled Phenomena Research Society; paranormal research group; Oulu, Finland) |