| Acronym | Definition |
|---|
| NACS➣National Association of Convenience Stores |
| NACS➣Netware Asynchronous Communications Server |
| NACS➣National Association of College Stores |
| NACS➣Northwest Allen County Schools (Indiana) |
| NACS➣North American Catalan Society |
| NACS➣Nordic Association for Canadian Studies (University of Turku; Finland) |
| NACS➣North American Catalysis Society |
| NACS➣North American Challenge Skate (figure skating competition) |
| NACS➣National Advisory Committee On Semiconductors |
| NACS➣Nippon Association of Consumer Specialists (Japan) |
| NACS➣National American Chemical Society |
| NACS➣Nordic Association for China Studies |
| NACS➣North American Counter-Strike (gaming) |
| NACS➣Network Access Control System |
| NACS➣North American Container System |
| NACS➣National Association of Consumer Shows |
| NACS➣National Association for Check Safekeeping |
| NACS➣North American Cockatiel Society |
| NACS➣Neutral Atmosphere Composition Spectrometer |
| NACS➣Neural and Cognitive Sciences (Maryland) |
| NACS➣North American Clivia Society |
| NACS➣NetWare Asynchronous Communications Server (Novell) |
| NACS➣North Asia Cable System (Level 3 Communications, Inc.) |
| NACS➣Northern Area Communications System |
| NACS➣National Academy of Construction Safety |
| NACS➣Northwest Academic Computing Consortium |
| NACS➣Network and Computing Services (University of California, Irvine) |
| NACS➣NetWare Asynchronous Connection Service (Novell) |
| NACS➣Network of Anti-Corruption Specialists |