| NACS | National Association Credit Services | 全国信用服务协会 |
| NACS | National Association of College Stores | 全国大学商店协会 |
| NACS | National Association of Convenience Stores | 全国便利店协会 |
| NACS | National Association of Consumer Shows | 全国消费者展览会协会 |
| NACS | Nordic Association for China Studies | 北欧中国研究协会 |
| NACS | North American Catalan Society | 北美加泰罗尼亚协会 |
| NACS | Netware Asynchronous Communication Services | Netware异步通信服务 |
| NACS | Northwest Academic Computing Consortium | 西北学术计算联盟 |
| NACS | National Advisory Committee On Semiconductors | 国家半导体咨询委员会 |
| NACS | North American Catalysis Society | 北美催化学会 |
| NACS | North American Container System | 北美集装箱系统 |
| NACS | North Asia Cable System (Level 3 Communications, Inc.) | 北亚有线电视系统(Level 3 Communications,Inc.) |
| NACS | National Academy of Construction Safety | 国家建筑安全研究院 |
| NACS | Network Access Control System | 网络访问控制系统 |
| NACS | National Ambulatory Care Survey | 全国门诊护理调查 |
| NACS | NetWare Asynchronous Communications Server (Novell) | NetWare异步通信服务器(Novell) |
| NACS | Northern Area Communications System | 北方地区通信系统 |
| NACS | North American Clivia Society | 北美君子兰学会 |
| NACS | North American Cockatiel Society | 北美鸡尾酒会 |
| NACS | NetWare Asynchronous Connection Service (Novell) | NetWare异步连接服务(Novell) |
| NACS | Neutral Atmosphere Composition Spectrometer | 中性气氛成分光谱仪 |
| NACS | Network And Academic Computing Services | 网络和学术计算服务 |