| NCTM | National Council of Teachers of Mathematics | 全国数学教师协会 |
| NCTM | Nationally Certified in Therapeutic Massage | 全国按摩治疗认证 |
| NCTM | National Capital Trolley Museum | 国家首都电车博物馆 |
| NCTM | Nationally Certified Teacher of Music | 国家认证音乐教师 |
| NCTM | North Coast Tool & Mold Corp (Cleveland, OH) | 北海岸的工具、模具有限公司(俄亥俄州克利夫兰) |
| NCTM | North Carolina Transportation Museum | 北卡罗来纳州交通博物馆 |