| Abbreviation | Definition |
|---|---|
| OSX | Macintosh Operating System version 10 |
| OT | Old Technology |
| OT | Organizational Training |
| OTA | Open Tools API (Application Programming Interface) |
| OTAP | Over the Air Programming |
| OTAP | Over-The-Air Programming |
| OTC | On-Going Test Case |
| OTCC | Obfuscated Tiny C Compiler |
| OTCG | On Tap Comms Group |
| OTES | Orian Technology Engine Software |
| OTF | On The Fly |
| OTLO | On The Line Office |
| OTLW | Old Timey Log Writer |
| OTM | Object Toolkit Manager |
| OTM | Online Translation Management |
| OTM | Open Transaction Manager |
| OTM | Oracle Transporatation Management |
| OTMP | Organizational Time Management and Planning |
| OTP | One Time Programmable |
| OTP | One Time Programming |