English abbreviations from osu to ota
- OSU (Ohio State University Airport)
- OSURG (Office of the Surgeon)
- OSUT (On-Site User Test(ing))
- OSV (Offset Scan Voting)
- OSVA (Off-Site Vital Area)
- OSW (Objective Sniper Weapon)
- OSW (USAF) (Operational Support, Weather)
- OSX (Kosciusko-Attala County Airport)
- OSY (Namsos Airport, Høknesøra)
- o symptoms (Zero symptoms)
- OSZ (Ottawa Ski Zone)
- OT (Occupational therapy)
- O.T. (Old Testament)
- OT&E (Operational Test and Evaluation)
- OT3 (One True 3-some (Threesome))
- OTA (overflight top attack)