美国电气制造商协会（National Electrical Manufacturers Association），简称NEMA，是美国电气设备及医学影像制造商组成的协会，在1926年创立，总部在华盛顿附近的维吉尼亚州罗斯林，由约450家有关发电、电力输送、配电、控制及终端电力使用的公司所组成。其中的医学影像与技术联盟（MITA）包括了医疗诊断影像设备（如核磁共振、电脑断层扫描、X光、超音波设备等）的制造商。

美国电气制造商协会出版许多标准、应用指南、白皮书及技术文档等。相关产品年营业额超过1400亿美金。美国电气制造商协会在北京及墨西哥巿也有办事处。

The National Electrical Manufacturers Association (NEMA) is the association of electrical equipment manufacturers in the United States. It was founded in 1926 and maintains its headquarters in Rosslyn, Virginia, just outside Washington, D.C. Its approximately 450 member companies manufacture products used in the generation, transmission, distribution, control, and end use of electricity. These products are used in utility, industrial, commercial, institutional, and residential applications. The association’s Medical Imaging & Technology Alliance (MITA) division represents manufacturers of cutting-edge medical diagnostic imaging equipment including MRI, CT, x-ray, and ultrasound products. Global sales of NEMA-scoped products exceed $140 billion. NEMA also has offices in Beijing and Mexico City.