English abbreviations from otn to ots
- OTN (Ed-Air Airport (FAA: 2IG4))
- OTO (Ordo Templi Orientis (Latin, "Order of the Temple of the East", i.e. the Order of Oriental Templars))
- OTOE (Objective TOE)
- OTOH (On The Other Hand)
- OTOR (On Track Off Road (Magazine))
- OTP (Henri Coandă International Airport)
- OTPROM (One Time Programmable Read Only Memory)
- OTQ (Orthopaedie-Technik Quarterly)
- OTR (Coto 47 Airport)
- O. Trinit. (Ordo Sanctissimae Trinitatis (Trinitarians))
- OTRR (Operational Test Readiness Review)
- OTRS (Open-source Ticket Request System)
- OTS (Officer Training School)
