| PET | Polyethylene Terephthalate | 聚对苯二甲酸乙二醇脂 |
| PET | Positron Emission Tomography | 正电子发射计算机断层扫描 |
| PET | Performance Evaluation Test | 性能鉴定试验 |
| PET | Personal Electronic Transactor (early Commodore PC) | 个人电子交易器（早期Commodore PC） |
| PET | Parent Effectiveness Training | 家长有效性培训 |
| PET | Privacy Enhancing Technology | 隐私增强技术 |
| PET | Performance Evaluation Tool | 绩效评估工具 |
| PET | Production Environmental Test | 生产环境试验 |
| PET | Process Enhancement Team | 流程增强团队 |
| PET | Precision End Trimmed (lumber) | 精密端部修剪（木材） |
| PET | Personal Electronic Thingy | 个人电子薄 |
| PET | User Productivity Enhancement and Technology Transfer (Previously Productivity Enhancement and Technology) | 用户生产力提高和技术转让（以前的生产力提高和科技） |
| PET | Product Enterprise Team (US Navy) | 产品企业团队（美国海军） |
| PET | Privacy Enhancing Technologies (Symposium) | 隐私增强技术（研讨会） |
| PET | Productivity Enhancement and Technology | 生产力提高和技术 |
| PET | Programming Environment and Training (HPCMP) | 编程环境与培训（HPCMP） |
| PET | Potentially Exempt Transfer (UK inland revenue) | 潜在免税转让（英国内陆收入） |
| PET | Professional Employment Training | 专业就业培训 |
| PET | Project Execution Team | 项目执行团队 |
| PET | Polling Every Time | 每次轮询 |
| PET | Performance Evaluation Team | 绩效评估小组 |
| PET | Priority Encoding Transmission (algorithm) | 优先编码传输（算法） |
| PET | Pre-Eclamptic Toxaemia | 惊厥前中毒 |
| PET | Pile Echo Tester (system for testing piles/shafts/deep foundations) | (系统测试桩回波信号检测桩基础/轴深) |
| PET | Parker Endotracheal Tube | Parker气管插管 |
| PET | Proton Electron Telescope | 质子电子望远镜 |
| PET | Polyethylene Terephthalate (more common than PETE) | 聚对苯二甲酸乙二醇酯（比PETE更常见） |
| PET | Precision Electric Turret | 精密电动刀架 |
| PET | Phase Elapsed Time | 阶段经过时间 |
| PET | Protected Entrance Terminal | 受保护的入口终端 |
| PET | Pulse Energy Thermography | 脉冲能量热成像 |
| PET | poor exercise tolerance | 运动耐受性差 |
| PET | Post-Exposure Treatment (rabies vaccination) | 暴露后治疗（狂犬病疫苗接种） |
| PET | polyethylene terephthalates | 聚对苯二甲酸乙二醇酯 |
| PET | Pupil Evaluation Team | 学生评估小组 |
| PET | Personal Terminal (MegaMan, gaming) | 个人终端（MegaMan，游戏） |
| PET | Print Enhancement Technology | 打印增强技术 |
| PET | Peten (Guatemala territorial division) | Petern（危地马拉领土划分） |
| PET | Peter (New Testament) | 彼得（新约） |
| PET | Presidential Electoral Tribunal (Philippines) | 总统选举法庭（菲律宾） |
| PET | Planetary Exploration Team | 行星探测队 |
| PET | Perl Embedded Templates | Perl嵌入式模板 |
| PET | Preferred Equity Traded | 交易的优先股 |
| PET | Pilotline Experiment Technology | 先导试验技术 |
| PET | Pelotas, Rio Grande do Sul, Brazil | 巴西南里奥格兰德州佩洛塔斯 |
| PET | People Events And Technologies | 人员事件和技术 |
| PET | Program for Effective Teaching | 有效教学计划 |
| PET | Personal Electronic Transactor | 个人电子交易 |
| PET | PEDOPHILE ERADICATION Team | 儿童根除小组 |
| PET | Planning Engineering And Testing | 规划工程和测试 |
| PET | IEEE Workshop on Power Electronics in Transportation | IEEE交通电力电子研讨会 |
| PET | Patulous Eustacian Tube | Patulous Eustacian管 |
| PET | PolyEthylene Teraphthalate | 聚对苯二甲酸乙二醇酯 |
| PET | Politiets Efterretningstjeneste (Danish for Police Intelligence Agency) | Politiets Efterretningstjeneste（丹麦警察情报局） |
| PET | Potential Evapotranspiration | 潜在蒸散量 |
| PET | preservative efficacy test | 防腐剂功效试验 |
| PET | Preliminary English Test | 英语初级考试 |
| PET | Photoinduced Electron Transfer | 子转移 |
| PET | Piezo-Electric Transducer | 压电式传感器 |
| PET | Petroleum | 石油 |
| PET | Peak Engine Torque | 峰值发动机扭矩 |
| PET | Petroleum Ether | 石油醚 |
| PET | Propulsion Engineering Trainer | 推进工程培训师 |
| PET | Piston Engine Technology | 活塞发动机技术 |
| PET | Pierre Elliot Trudeau (former Canadian Prime Minister) | 皮埃尔·埃利奥特·特鲁多（加拿大前总理） |
| PET | Phase Emission Tomography | 相发射层析成像 |
| PET | Proposal Evaluation Tool | 提案评估工具 |
| PET | Pet Energy Therapy | 宠物能量疗法 |
| PET | Persuasion Emotion and Trust | 说服、情感和信任 |
| PET | Positron Emissie Tomografie (Dutch) | Postron Emissie Tomografie（荷兰语） |
| PET | Permanent Engaged Tone | 永久接合音 |
| PET | Pilot-Line Experiment Technology | 中试线实验技术 |
| PET | peak ejection time | 峰值喷射时间 |
| PET | polyethylene tute | 聚乙烯保护层 |
| PET | position emission tomography | 位置发射层析成像 |
| PET | progressive exercise test | 渐进运动试验 |
| PET | peak effect time | 峰值效应时间 |
| PET | Personal Electronic Thing | 个人电子产品 |
| PET | pre-eclamptic toxemia | 先兆子痫毒血症 |
| PET | pre-eclampsia-toxemia | 子痫前期毒血症 |
| PET | Program Editor top overflow file (WordPerfect Library) | 程序编辑器顶部溢出文件（WordPerfect库） |
| PET | Poly Ethylene Terephthalate | 聚对苯二甲酸乙二醇酯 |
| PET | pear-shaped extension tube | 梨形延长管 |
| PET | Potentially Exempt Transfer | 潜在免税转让 |
| PET | Pancreatic Endocrine Tumor | 胰腺内分泌肿瘤 |
| PET | Petrolatum | Petrolatum公司 |
| PET | Post-etch treatment | 蚀刻后处理 |
| PET | Pattern Editing Toolkit | 图案编辑工具包 |
| PET | Personal Terminal | 个人终端 |
| PET | Prevention Education And Treatment | 预防教育和治疗 |
| PET | Precollege Engineer Training | 大学前工程师培训 |