| Acronym | Definition |
|---|
| OTAC➣Over the Air Configuration (mobile network) |
| OTAC➣Occupational Therapy Association of California |
| OTAC➣Ordnance Tank-Automotive Center (US Army; predecessor to TACOM, 1950-1962) |
| OTAC➣Olde Towne Athletic Club (Marietta, GA) |
| OTAC➣Over the Air Customisation (Mobile phone terminology.) |
| OTAC➣Office of Tax Administration Coordination |