| TRIO | Three Really Inspired Obsessors | 三个真正受启发的观察者 |
| TRIO | The Rebellion Is On | 叛乱正在进行 |
| TRIO | The Responsibility Is Ours | 责任在我们 |
| TRIO | Technical Research for Information Operations (bd Systems) | 信息作战技术研究（bd系统） |
| TRIO | Telecommunications Research Institute of Ontario | 安大略省电信研究所 |
| TRIO | TIPHON Remote InterOp | TIPHON远程互操作 |
| TRIO | Transplant Recipients International Organization | 移植接受者国际组织 |
| TRIO | [not an acronym] refers to a number (originally 3, now 7) of US federal programs to increase access to higher education | [不是首字母缩写]指的是美国联邦政府为增加高等教育机会而实施的多项计划（最初为3项，现在为7项） |
| TRIO | Tracking Radar Input Output System (USN ETR) | 跟踪雷达输入输出系统（USN ETR） |