| Abbreviation | Definition |
|---|---|
| OTLC | Object Technology Licensing Corporation |
| OTM | On Time Machine |
| OTM | Outbound Travel Mart |
| OTMP | Ontario Tourism Marketing Partnership |
| OTMPC | Ontario Tourism Marketing Partnership Corporation |
| OTN | On The Net |
| OTN | Online Training Network |
| OTN | Oracle Technology Network |
| OTP | OEM (Original Equipment Manufacturer) Technology Provider |
| OTP | Once Tamed Productions |
| OTP | Országos Takarékos Pénztár |
| OTQ | On Target Quality |
| OTS | Occupational Training & Supply, Inc. |
| OTS | OM TAT SAT Solutions PVT., LTD. |
| OTS | Online Ticketing System |
| OTSI | Object Technology Solutions Inc |
| OTSI | Online Training Solutions Inc |
| OTSI | Optimum Transsource, Incorporated |
| OTSS | Overseas Technical Support Services |
| OTTC | Old Town Theatre Company |