| Acronym | Definition |
|---|
| ATSC | Advanced Television Systems Committee |
| ATSC | Accurate Tilt Servo Control |
| ATSC | Active Traction and Stability Control |
| ATSC | Advanced Television Standards Committee |
| ATSC | Army Training Support Center (US Army) |
| ATSC | Atmospheric Sciences |
| ATSC | Australian Tree Seed Centre (Commonwealth Scientific and Industrial Research Organisation; Australia) |
| ATSC | Air Travellers Security Charge |
| ATSC | Autism Treatment Services of Canada |
| ATSC | Australian Telecommunication Standardization Committee |
| ATSC | Allied-Signal Technical Services Corporation |
| ATSC | Air Traffic Services Communication |
| ATSC | Air Tactical Service Command (US Air Force) |
| ATSC | American Transit Services Council |
| ATSC | Atlanta Service Center (IRS Tax Return Filing Center) |
| ATSC | Air Traffic Security Coordinator |
| ATSC | Atlanta Travel & Social Club |
| ATSC | Advanced Tactical Security & Communications, LLC (Louisville, Colorado) |
| ATSC | Atlantique Technique Soudage Coupage (French: Atlantic Welding Cutting Technique; est. 1986) |
| ATSC | Automated Terminal Service Communication |
| ATSC | Associate Tonic Solfa College (London, UK) |
| ATSC | Association de Tir Sportif du Chinonais (French: Shooting Sports Association of Chinon; Chinon, France) |