| Acronym | Definition |
|---|
| ATEC | Australian Tourism Export Council |
| ATEC | Arts, Technology, and Emerging Communication (University of Texas at Dallas) |
| ATEC | Army Test and Evaluation Command (US Army; formerly OPTEC, Operational Test & Evaluation Command) |
| ATEC | Applied Technology Education Center |
| ATEC | Authorized Technical Education Center |
| ATEC | Assistive Technology Center |
| ATEC | Advanced Technologies (Hamburg, Germany) |
| ATEC | Assistive Technology Exchange Center |
| ATEC | Aviation Technician Education Council |
| ATEC | Authorized Technical Education Center (Microsoft) |
| ATEC | Alberta Tourism Education Council |
| ATEC | Asociación Talamanqueña de Ecoturismo y Conservación (Spanish: Talamancan Association of Ecotourism and Conservation; Costa Rica) |
| ATEC | Association of Teachers of Exceptional Children |
| ATEC | Authorized Training and Education Center |
| ATEC | Advanced Technology Education Consortium (Canada) |
| ATEC | Association des Thésards et Etudiants en Catalyse (French chemistry student association) |
| ATEC | Automated Technical Control |
| ATEC | Anti Terror Elite Clan (gaming) |
| ATEC | Army Technical Evaluation Council |
| ATEC | Automatic Test Control |
| ATEC | Atmospheric Technology, Inc. (Calabasas, CA) |
| ATEC | Antiterrorism Executive Committee (US Army) |
| ATEC | Advanced Test and Evaluation Course (DSMC) |
| ATEC | All Terrain Crane, 25 Ton |
| ATEC | Advanced Television Evaluation Center (Canada) |
| ATEC | Assistive Tech Educational Consulting (Kamloops, BC, Canada) |