| TAD | Telephone Answering Device | 电话应答设备 |
| TAD | Trunk ADapter | 干线适配器 |
| TAD | Thrust Augmented Delta | 加大推力型德尔塔 |
| TAD | Thermactor Air Diverter | 温控分气装置 |
| TAD | Texas Association of the Deaf | 德克萨斯州聋人协会 |
| TAD | Tennessee Association of the Deaf | 田纳西州聋人协会 |
| TAD | Traveling Around Drunk | 醉驾游 |
| TAD | Transitional Assistance Department (San Bernardino County, Human Services Department) | 过渡援助部（圣贝纳迪诺县，公共服务部） |
| TAD | Tobacco Acquisition Disorder (alt.smokers.pipes) | 烟草获得障碍（吸烟者、烟斗） |
| TAD | Top Alcohol Dragster (drag racing class) | 顶级酒精飙车（飙车类） |
| TAD | Temporary Assigned Duty (military) | 临时任务（军事） |
| TAD | Temporary Additional Duty | 临时附加关税 |
| TAD | Theater Air Defense | 战区防空 |
| TAD | Target Audience Description | 目标受众描述 |
| TAD | Turn-Around Document | 周转文档 |
| TAD | Top Assembly Drawing | 顶部装配图 |
| TAD | Targeting A Dream, Inc | 瞄准梦想公司 |
| TAD | Trade Acceptance Draft (post-dated payment draft given by a buyer to its supplier) | 贸易承兑汇票（买方给其供应商的后付款汇票） |
| TAD | Trade Acceptance Drafts (Actrade) | 贸易承兑汇票（Actrade） |
| TAD | Towed Array Dynamics | 拖曳阵列动力学 |
| TAD | Turbo Alternator Drive | 涡轮发电机驱动 |
| TAD | Time And Date | 时间和日期 |
| TAD | Tower, Approach, and Departure Control Air Traffic Control Facility | 塔台、进近和离场管制空中交通管制设施 |
| TAD | target-to-axis distance | 目标到轴的距离 |
| TAD | Technical Assistance District | 技术援助区 |
| TAD | transient acantholytic dermatosis | 短暂性棘细胞溶解性皮肤病 |
| TAD | Temporary Attached Duty | 临时附加职责 |
| TAD | thiamine allyl disulfide | 硫胺烯丙基二硫 |
| TAD | The Architect's Desktop | 建筑师的桌面 |
| TAD | Time-Averaged Difference | 时间平均差值 |
| TAD | thoracic asphyxiant dystrophy | 胸部窒息性营养不良 |
| TAD | 6-thioguanine,ara-c(cytarabine),and daunorubicin | 6-硫鸟嘌呤、ara-c（阿糖胞苷）和柔红霉素 |
| TAD | Technology Activities Database | 技术活动数据库 |
| TAD | Technical Audio Device | 技术音频设备 |
| TAD | Touch And Die | 触摸和模具 |
| TAD | The Associated Designers | 相关设计师 |
| TAD | Towed Artillery Digitization | 拖曳式火炮数字化 |
| TAD | Trent Architecture Design (UK) | 特伦特建筑设计（英国） |
| TAD | Thermophilic Aerobic Digestion | 高温好氧消化 |
| TAD | Transboundary Animal Disease | 跨界动物疾病 |
| TAD | Take A Dump | 上大号 |
| TAD | temporary additional duty (non-unit-related personnel) (US DoD) | 临时附加任务（非部队相关人员）（美国国防部） |
| TAD | time available for delivery (US DoD) | 可交付时间（美国国防部） |
| TAD | Total Air Diffuser (HVAC systems) | 总空气扩散器（HVAC系统） |
| TAD | Temporary Administrative Assignment | 临时行政指派 |
| TAD | The American Dream | 美国梦 |
| TAD | The Allied Defense (gaming clan) | 盟军防御（游戏部落） |
| TAD | Test Access Device | 测试访问设备 |
| TAD | Tactical Air Directive | 战术空中指令 |
| TAD | Technical Area Document | 技术领域文件 |
| TAD | Technical Assistance Document | 技术援助文件 |
| TAD | Temporary Active Duty | 临时现役 |
| TAD | Transmit Antenna Diversity | 发射天线分集 |
| TAD | Technical Assistant to the Director (Army Research Laboratory position) | 主任技术助理（陆军研究实验室职位） |
| TAD | Transatlantic Dialogue | 跨大西洋对话 |
| TAD | Tactical Air Direction | 战术空中方向 |
| TAD | Type Accreditation Document | 型式认证文件 |
| TAD | Telephone And Data | 电话和数据 |
| TAD | Tactical Air Defense | 战术防空 |
| TAD | Tender Assist Drilling (offshore oil and gas) | 投标协助钻井（海上石油和天然气） |
| TAD | Technical Assessment Division | 技术评估处 |
| TAD | Technology Availability Date | 技术可用日期 |
| TAD | Tooele Army Depot (Tooele, Utah) | 图埃勒陆军仓库（犹他州图埃勒） |
| TAD | Through Air Dried | 通过空气干燥 |
| TAD | Tax Appraisal District | 税务评估区 |
| TAD | Technology and Design | 技术与设计 |
| TAD | Target Award Date | 目标奖励日期 |
| TAD | Test Access Digroup | 测试访问双组 |
| TAD | Target Area Designator | 目标区域指示符 |
| TAD | Technical Assistance and Direction | 技术援助和指导 |
| TAD | Training Augmentation Device | 训练增强设备 |
| TAD | Technical Approach Document | 技术方法文件 |
| TAD | Technology Area Description | 技术领域描述 |
| TAD | Technical Art Director (film & video game production) | 艺术总监(电影及技术的视频游戏制作) |