| Acronym | Definition |
|---|
| ATMC➣Advanced Technology and Manufacturing Center (University of Massachusetts Dartmouth) |
| ATMC➣Automotive Training Managers Council |
| ATMC➣Ante Todo Mucha Calma (Spanish: Above All Very Calmly; album) |
| ATMC➣Atlantic Telephone Membership Corporation (Shallotte, North Carolina) |
| ATMC➣An Teallach Mountaineering Club (Scotland) |
| ATMC➣Air Transport Movement Control Center |
| ATMC➣Admiralty Transmitting Magnetic Compass |
| ATMC➣Asynchronous Transfer Mode Chip |
| ATMC➣According To My Calculations |
| ATMC➣Automação e Telecomunicação Ltd (Portugese: Automation and Telecommunication) |
| ATMC➣Altitude - Training and Management Consultants (Australia) |
| ATMC➣Alternative to Meds Center (San Francisco, CA) |