OTAC
| 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 |