| ATC | Ablative Thrust Control | In English | |
| ATC | Active Thermal Control | In English | |
| ATC | Air Training Command | In English | |
| ATC | Air Traffic Control | In English | |
| ATC | Aircraft Target Computer | In English | → Hardware → Aeronautics, aircraft |
| ATC | Assistant Test Conductor | In English | |
| ATC | ATE Computer | In English | → Computer science |
| ATC | Advanced Training Centre | In English | |
| ATC | Association Touristique des Cheminots | In French | → Organizations and associations → Tourism |
| ATC | Action Thématique Concertée | In French | → Management |
| ATC | Advanced Transfer Cache | In English | → Networks, communication → Telecommunications |
| ATC | Abstract Test Case | In English | |
| ATC | Athens Technology Center (www.atc.gr) | In English | → Engineering, technology |
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