| PID | piping and instrument diagram | 管道仪表流程图 |
| PID | pelvic inflammatory disease | 盆腔炎 |
| PID | Proportion Integration Differentiation | 比例积分微分 |
| PID | Passire Infrared Detector | 被动式红外传感器 |
| PID | Package Identification Number | 包装识别码 |
| PID | Process Controls for Industry | 工业进程控制 |
| PID | Project Information Document | 项目信息文件 |
| PID | Process Identifier | 进程标识符 |
| PID | photoionization detector | 光离子化检测器 |
| PID | Process Industries Division (American Society of Mechanical Engineers) | 过程工业部（美国机械工程师协会） |
| PID | Nassau, Bahamas - Paradise Island (Airport Code) | 巴哈马拿骚-天堂岛（机场代码） |
| PID | Project Initiation Document | 项目启动文件 |
| PID | Proprietary Information Disclosure | 专有信息披露 |
| PID | Process Identification Document | 工艺标识文件 |
| PID | Process Identification | 工艺标识 |
| PID | Project Identification Document | 项目识别文件 |
| PID | Personal Identification | 个人身份 |
| PID | Portable Inspection Device | 便携式检查设备 |
| PID | Packet Identifier | 包标识 |
| PID | Patient-Identifiable Data (UK National Health Service) | 患者可识别数据（英国国家卫生服务局） |
| PID | Personally-Identifiable Data | 个人可识别数据 |
| PID | Personnel Increment Number | 人员增量编号 |
| PID | Particle Identification (Nuclear and Particle Physics) | 粒子识别（核与粒子物理学） |
| PID | Program Implementation Directive | 项目实施指令 |
| PID | Password Identifier | 密码标识符 |
| PID | Pre-flight Inserted Data (US Navy S-3 and P-3 aircraft) | 飞行前插入数据（美国海军S-3和P-3飞机） |
| PID | Photo Ionization Detector | 光电离检测器 |
| PID | Program Implementation Document | 项目实施文件 |
| PID | Proportional, Integral, Derivative (process control, programmable logic controllers) | 比例、积分、微分（过程控制、可编程逻辑控制器） |
| PID | Process Instrument Diagram | 工艺仪表图 |
| PID | Paradise In Distress (Golden Earring album) | 困境中的天堂（金耳环专辑） |
| PID | Plan Identifier | 计划标识符 |
| PID | Proportional Integrator Differentiator | 比例积分微分器 |
| PID | Proportional, Integral, Differential | 比例、积分、微分 |
| PID | Partido Institucional Democratico (MÉxico, politcal party) | Partido Institucional Democratico (MÉxico, politcal party) |
| PID | Plan Identification number | 计划标识号 |
| PID | Press Information Department (Pakistan) | 新闻信息部（巴基斯坦） |
| PID | Programmable Interrupt Device | 可编程中断设备 |
| PID | Process & Instrumentation Diagram (also seen as P&ID) | 过程及仪表图(也视为P&ID) |
| PID | Project Information Database | 项目信息数据库 |
| PID | Planned Imaging Data | 计划成像数据 |
| PID | Physical Interface Device | 物理接口设备 |
| PID | Poughkeepsie Inflamatory Disease | 波基普西传染病 |
| PID | primary immumodefficiency | 初级免疫效率 |
| PID | Parameter Identication Data | 参数识别数据 |
| PID | prolapsed intervertebral disease | 椎间盘突出症 |
| PID | Planned Industrial District | 规划工业区 |
| PID | platelet-inhibiting drug | 血小板抑制药物 |
| PID | Plant Industries Division | 工厂工业部 |
| PID | post-infection day(s) | 感染后天数 |
| PID | Personal Identity Digit | 个人身份数字 |
| PID | pain intensity difference | 疼痛强度差 |
| PID | Product Installation Diagram | 产品安装图 |
| PID | 2-phenyl-1 h-indene-1,3(2h)-dione | 2-苯基-1H-茚-1,3（2h）-二酮 |
| PID | Packet Identifier Digital | 数据包标识符数字 |
| PID | Proportional Integral Derivative | 比例积分导数 |
| PID | Process Innovation Deployment | 流程创新部署 |
| PID | Process ID file (Unix) | 进程ID文件（Unix） |
| PID | Painted Internal Diameter | 涂漆内径 |
| PID | Nassau Paradise Island, Bahamas | 拿骚天堂岛，巴哈马 |
| PID | Prime Item Development | 主要项目开发 |
| PID | Past International Director | 前国际董事 |
| PID | Program Integration Directorate | 项目集成局 |
| PID | Procurement Identification Description | 采购标识说明 |
| PID | Product Identification | 产品标识 |
| PID | Public Improvement District | 公共改善区 |
| PID | Process Identification Number | 工艺标识号 |
| PID | Primary Input Device | 主输入设备 |
| PID | Protocol Identification | 协议标识 |
| PID | Procurement Item Description | 采购项目描述 |
| PID | Parameter Identification | 参数识别 |
| PID | Prolapsed Intervertebral Disc | 椎间盘突出 |
| PID | Project Identification | 项目标识 |
| PID | Primary Immunodeficiency Disease | 原发性免疫缺陷病 |
| PID | Protist Image Data | Protist图像数据 |
| PID | Progress IDdentifier | 进度ID标识符 |
| PID | Plant and Instrumentation Drawing | 设备和仪表图纸 |
| PID | Principal Ideal Domain | 主理想域 |
| PID | Program Identifier | 程序标识符 |
| PID | Proportional-Integral-Derivative Control (Instrumentation process control) | 比例积分微分控制（仪表过程控制） |
| PID | Poisons Information Database | 毒物信息数据库 |
| PID | Protocol Identifier Data | 协议标识符数据 |
| PID | Procurement Initiation Document | 采购启动文件 |
| PID | Precursor Ion Discovery (mass spectrometry) | 前体离子发现（质谱） |
| PID | Patient Identifier (alphanumeric and bar code) | 患者标识符（字母数字和条形码） |
| PID | Piping & Instrumentation Diagram | 管道及仪表图 |
| PID | Proportional-Integral-Derivative (controller) | 比例积分微分（控制器） |
| PID | Planned Industrial Development | 计划的工业发展 |
| PID | Plan Identification Designator | 计划标识指示符 |
| PID | Programmable Interface Device | 可编程接口设备 |
| PID | Program Introduction Document | 项目介绍文件 |
| PID | Partial Initial Decision | 部分初始决策 |
| PID | Parent Identification | 父项标识 |
| PID | Plan Identification | 计划标识 |
| PID | Public Information Display | 公共信息显示 |
| PID | Product Item Description | 产品项目描述 |
| PID | post-inertia dyskinesia | 惯性后运动障碍 |
| PID | post-inoculation day(s) | 接种后天数 |
| PID | plasma iron disappearance | 等离子铁消失 |