| ATS | Acceptance Test Specification | In English | |
| ATS | Atlantic Tracking Station | In English | |
| ATS | Automatic Terminal System | In English | |
| ATS | Automatic Test Set | In English | |
| ATS | Automatic Transcribing System | In English | → Computer-based techniques |
| ATS | Administrative Telephone System | In English | → Telecommunications → Public administration, government |
| ATS | Administrative Terminal System | In English | → Telecommunications → Public administration, government |
| ATS | Advanced Technology Satellite | In English | → Spaceflight engineering, astronautics |
| ATS | Analog Tone Signal | In English | |
| ATS | Applications Technology Satellite | In English | → Spaceflight engineering, astronautics |
| ATS | Assembly Trusses and Structure | In English | |
| ATS | Asynchronous Task Storage | In English | |
| ATS | Atlantic Tracking Ship | In English | → 6295 |
| ATS | Abstract Test Suite | In English | |
| ATS | Aktivul-Trejna Seminario | In Esperanto | → Congresses |
| ATS | Accès des Tiers aux Stockages | In French | → Energy economics |