| RMTA | Reading Music Teachers Association | 阅读音乐教师协会 |
| RMTA | Richmond Music Teachers Association (Virginia) | 里士满音乐教师协会（弗吉尼亚） |
| RMTA | Rocky Mountain Telecommunications Association | 落基山电信协会 |
| RMTA | Routes To Market Association | 市场路线协会 |
| RMTA | Resident Musical Theatre Association | 常驻音乐剧协会 |
| RMTA | Richardson Music Teachers Association | 理查德森音乐教师协会 |
| RMTA | Rhythmical Massage Therapy Association of North America | 北美韵律按摩治疗协会 |
| RMTA | Rocky Mountain Telephone Association | 落基山电话协会 |
| RMTA | Rocky Mountain Theatre Association | 落基山剧院协会 |
| RMTA | Remedial Massage Therapist Association (Canada) | 补救按摩治疗师协会（加拿大） |
| RMTA | Registered Music Teachers Association (Vancouver, BC, Canada) | 注册音乐教师协会（温哥华，BC，加拿大） |
| RMTA | Rocky Mountain Trials Association | 落基山审判协会 |
| RMTA | Ranch Muffler & Truck Accessories, Inc. (Temecula, CA) | 汽车配件、消声器、牧场。(Temecula、钙) |
| RMTA | Receiving Mail Transfer Agent | 接收邮件传输代理 |
| RMTA | Rec Music Tori Amos | 雷科音乐托里·阿莫斯 |
| RMTA | Risk Management Training and Assessment | 风险管理培训和评估 |
| RMTA | Rocky Mountain Trench Adventures | 落基山海沟探险 |
| RMTA | Rocky Mountain Technology Alliance | Rocky Mountain技术联盟 |
| RMTA | rec.music.tori-amos (newsgroup) | 录制音乐。tori amos（新闻组） |
| RMTA | Rick Macci Tennis Academy (Pompano Beach, Florida) | Rick Macci网球学院（佛罗里达州蓬帕诺海滩） |
| RMTA | Revolutionary Movement Tupac Amaru | 图帕克·阿马鲁革命运动 |
| RMTA | Randy Mani Tennis Academy (New York) | 兰迪·马尼网球学院（纽约） |
| RMTA | Rigid-Muffin-Tin Approximation | 刚性Muffin Tin近似 |
| RMTA | Rocky Mountain Tennis Academy (Littleton, CO) | 洛基山网球学院（科罗拉多州利特尔顿） |
| RMTA | Resource Mobilisation and Technical Assistance | 资源调动和技术援助 |