| POSSE | Preserve Our Student Shows For Eternity | 永远保存我们的学生表演 |
| POSSE | Pluto And Outer Solar System Explorer | 冥王星和外太阳系探测器 |
| POSSE | Peers Organized to Support Student Excellence | 组织同行支持学生卓越 |
| POSSE | Party Of Sixth Seventh And Eighth | 第六、七、八党 |
| POSSE | Parental Obligation System for Support Enforcement | 支持执行的父母义务制度 |
| POSSE | Program of Ship Salvage Engineering (software package) | 船舶打捞工程程序（软件包） |
| POSSE | Portland Open Source Software Entrepreneurs | 波特兰开源软件企业家 |
| POSSE | Portable Open-Source Security Enhancements | 便携式开源安全增强 |
| POSSE | People of Success Stressing Excellence | 成功人士强调卓越 |
| POSSE | Parenting Our Successors in Society Effectively | 有效地养育我们的社会接班人 |
| POSSE | Preparing Outstanding Scholars for Special Education | 为特殊教育培养优秀学者 |