| OPD | Optical Path Difference | 光路差异 |
| OPD | Office of the Public Defender | 公设辩护人办公室 |
| OPD | Overfilling Prevention Device (propane tanks) | 防止溢流装置(丙烷罐) |
| OPD | Organizational Process Definition (Process Area; Capability Maturity Model Integration) | 组织过程定义(过程领域;能力成熟度模型集成) |
| OPD | Audit Programs Division (DCAA) | 审计计划部(DCAA) |
| OPD | Olympia Police Department (Olympia, WA) | 奥林匹亚警察局(西澳大利亚州奥林匹亚) |
| OPD | Ocean Profile Database | 海洋剖面数据库 |
| OPD | Officially Pronounced Dead | 官方宣布死亡 |
| OPD | Optical Proximity Detector | 光学接近检测器 |
| OPD | Oakland Police Department | 奥克兰警察局 |
| OPD | Outpatient Department | 门诊 |
| OPD | Operand | 操作数 |
| OPD | Officer Professional Development | 军官专业发展 |
| OPD | Ontario Police Department | 安大略省警察局 |
| OPD | Ocean Power Delivery (Edinburgh, Scotland) | 海洋电力输送(苏格兰爱丁堡) |
| OPD | Ovideo Police Department | 奥维多警察局 |
| OPD | Opelousas Police Department (Louisiana) | Opelousas警察局(路易斯安那州) |
| OPD | Ocoee Police Department | Ocoee警察局 |
| OPD | Owensboro Police Department (Owensboro, KY) | 欧文斯博罗警察局(肯塔基州欧文斯博罗) |
| OPD | Orderly Payment of Debts | 有序偿还债务 |
| OPD | Office of Program Development | 计划发展处 |
| OPD | Order Processing Department | 订单处理部 |
| OPD | Overfill Protection Device (propane tanks) | 溢流保护装置(丙烷罐) |
| OPD | Ottawa Police Department | 渥太华警察局 |
| OPD | obstetric prediabetes | 产科糖尿病前期 |
| OPD | Overfilling Prevention Device | 溢流防止装置 |
| OPD | ocular psychosomatic disease | 眼心身疾病 |
| OPD | oto-palato-digital(syndrome) | 耳腭指(综合征) |
| OPD | outpatient dispensary | 门诊药房 |
| OPD | Outsourced Product Development | 外包产品开发 |
| OPD | Overton Power District | 奥弗顿电力区 |
| OPD | Once Per Day | 每天一次 |
| OPD | Obnoxious Personality Disorder | 令人厌恶的人格障碍 |
| OPD | Operations Division (US Department of War, WWII) | 作战部(美国战争部,第二次世界大战) |
| OPD | Opificio delle Pietre Dure (Florence, Italy) | Pietre Dure歌剧院(意大利佛罗伦萨) |
| OPD | Odessa Police Department (Odessa, Texas) | 敖德萨警察局(德克萨斯州敖德萨) |
| OPD | Original Promise Date | 原始承诺日期 |
| OPD | obsessive personality disorder | 强迫性人格障碍 |
| OPD | Output Performance Distribution | 输出性能分布 |
| OPD | Orlando Police Department | 奥兰多警察局 |
| OPD | Offshore Product Development | 海上产品开发 |
| OPD | OmniPage Document | OmniPage文档 |
| OPD | Oto-Palatal-Digital Syndrome (general bone/skeletal disorder) | Oto-Palatal-Digital综合症(一般骨/骨骼混乱) |
| OPD | Other Protestant Denominations | 其他新教教派 |
| OPD | Over Past Due | 逾期未付 |
| OPD | One Per Deck | 每个甲板一个 |
| OPD | Old Persons Disease | 老年人疾病 |
| OPD | Orland Police Department | 奥兰警察局 |
| OPD | Organization Process Definition | 组织流程定义 |
| OPD | Office of Public Defense (Washington State) | 公共防御办公室(华盛顿州) |
| OPD | Ocala Police Department | 奥卡拉警察局 |
| OPD | Orting Police Department (Orting, Washington) | 奥尔廷警察局(华盛顿州奥尔廷) |
| OPD | Out Patient Department | 门诊部 |