| OTP | Office of Telecommunications Policy U.S. government | 美国电信政策办公室 |
| OTP | Opposite Track Path | 逆光道路径 |
| OTP | One Time Programmable | 一次性编程 |
| OTP | Bucharest, Romania - Otopeni (Airport Code) | 罗马尼亚布加勒斯特-Otopeni（机场代码） |
| OTP | Order to Pay | 订单付款 |
| OTP | Over the Phone | 通过电话 |
| OTP | OrszÁgos TakarÉk PÉnztÁr (Hungarian: General Saving Bank) | OrszÁgos TakarÉk PÉnztÁr (Hungarian: General Saving Bank) |
| OTP | Orbital Time Processor | 轨道时间处理器 |
| OTP | Overtime Personnel | 加班人员 |
| OTP | Openland Tree-Planting | 露天植树 |
| OTP | On the Pause | 暂停时 |
| OTP | Open Trading Protocol (for purchasing) | 开放交易协议（用于购买） |
| OTP | Over Temperature Protection | 过热保护 |
| OTP | One Time Pad | 一次性衬垫 |
| OTP | One Time Password | 一次性密码 |
| OTP | Operational Test Plan | 运转试验 |
| OTP | One True Pairing | 一对真正的配对 |
| OTP | Outline Test Plan | 实验纲要计划 |
| OTP | Open Telecom Platform | 开放式电信平台 |
| OTP | Office of Telecommunications Policy | 电信政策办公室 |
| OTP | On the Piss | 关于Pis |
| OTP | On The Phone | 在电话中 |
| OTP | Outside The Perimeter | 周界外 |
| OTP | On The Prowl | 关于潜逃 |
| OTP | Optional Term Policy | 可选期限政策 |
| OTP | Origin Template Plot | 原点样板图 |
| OTP | Opposite Track Path (DVD mastering system) | 相对磁道路径（DVD母盘系统） |
| OTP | Operational Test Piece | 操作试件 |
| OTP | On The Premises | 在经营场所内 |
| OTP | Out To Practice | 外出练习 |
| OTP | Other Theater Project (Cleveland, Ohio) | 其他剧院项目（俄亥俄州克利夫兰） |
| OTP | Operational Test Procedure | 操作适用性试验程序 |
| OTP | Off Topic Post | 非主题帖子 |
| OTP | Otopeni, Romania | 罗马尼亚奥托佩尼 |
| OTP | Olympic Trial Participant | 奥运选拔赛参与者 |
| OTP | One Time Programming | 一次性编程 |
| OTP | Off The Path | 偏离道路 |
| OTP | Ought To Pass | 应该通过 |
| OTP | One Tree Point | 一个树点 |
| OTP | Open Telecommunications Platform | 开放式电信平台 |
| OTP | OEM (Original Equipment Manufacturer) Technology Provider | OEM（原始设备制造商）技术提供商 |
| OTP | On-Time Performance | 准时性能 |
| OTP | One Time Programmable (electronics) | 一次性可编程（电子） |
| OTP | Operations Training Package | 操作培训包 |
| OTP | One True Pair/Pairing (fan fiction, erotica) | 一个真正的双/配对(同人小说中,情色) |
| OTP | One-Trick Pony (Paul Simon song/album) | One-Trick小马(保罗·西蒙歌曲/专辑) |
| OTP | Outside the Perimeter (people living outside the I-285 perimeter of Atlanta, GA) | 周界外（居住在佐治亚州亚特兰大I-285周界外的人） |
| OTP | Oregon Transportation Plan | 俄勒冈州交通计划 |
| OTP | Odznaka Turystyki Pieszej (Polish PTTK badge) | Odznaka Turystyki Pieszej（波兰PTTK徽章） |
| OTP | Opioid Treatment Program | 阿片类药物治疗计划 |
| OTP | Optional Time Period | 可选时间段 |
| OTP | One Team Partner | 一个团队合作伙伴 |
| OTP | Operating & Transition Plan | 操作和过渡的计划 |
| OTP | Optical Technology Project | 光学技术项目 |
| OTP | Operational Trial Period | 运营试验期 |
| OTP | Orlando Theatre Project (Orlando, FL) | 奥兰多剧院项目（佛罗里达州奥兰多） |
| OTP | Outdoor Therapeutic Program | 户外治疗计划 |
| OTP | Other Trustworthy Person (PEZ collectors) | 其他值得信赖的人（PEZ收藏家） |
| OTP | Offer to Purchase | 购买要约 |