| Acronym | Definition |
|---|
| OATC➣Open Authentication Technology Committee |
| OATC➣Oklahoma Assistive Technology Center (Oklahoma City, OK) |
| OATC➣Oregon Association of Tax Consultants (Hillsboro, OR) |
| OATC➣Oceanic Air Traffic Center (US Navy) |
| OATC➣Order of the Arrow Trail Crew (Philmont Scout Ranch, Boy Scouts of America) |
| OATC➣Overseas Air Traffic Control (US Navy) |
| OATC➣Operational Advisor Training Course (warfare group) |
| OATC➣Oregon Advanced Technology Consortium (Clackamas Community College) |
| OATC➣Open Architecture Train Control |
| OATC➣Oxford Airline Training Center (Arizona) |