| Acronym | Definition |
|---|
| OTEC➣Ocean Thermal Energy Conversion |
| OTEC➣Ohio Transportation Engineering Conference (Ohio) |
| OTEC➣Ontario Tourism Education Corporation (Ontario, Canada) |
| OTEC➣Oregon Trail Electric Cooperative (Baker City, OR) |
| OTEC➣Orchid Technologies Engineering & Consulting, Inc. |
| OTEC➣Operational Test & Evaluation Center |
| OTEC➣Over the Edge Customs (car & truck club) |