| LAD | Louisiana Association of the Deaf | 路易斯安那州聋人协会 |
| LAD | Luanda, Angola - Fevereiro (Airport Code) | 安哥拉罗安达-Fevereiro（机场代码） |
| LAD | Laser Acquisition Device | 激光采集设备 |
| LAD | Laboratoire Suisse d'Analyse du Dopage | 瑞士Laboratoire 'Analyse嘟Dopage d |
| LAD | Labor Authorization Document | 劳工授权文件 |
| LAD | Limited Authorization Drawing | 有限授权图纸 |
| LAD | Local Attack Detection | 本地攻击检测 |
| LAD | lactic acid dehydrogenase | 乳酸脱氢酶 |
| LAD | Liquid Agent Detector | 液体试剂检测器 |
| LAD | Left Anterior Descending | 左前降 |
| LAD | Los Angeles Dodgers (baseball team) | 洛杉矶道奇队（棒球队） |
| LAD | Latest Arrival Date | 最晚到达日期 |
| LAD | Logistics Automation Directorate | 物流自动化局 |
| LAD | Landing Assist Device | 着陆辅助装置 |
| LAD | Logistics Anchor Desk | 后勤后备处 |
| LAD | Leukocyte Adhesion Deficiency | 白细胞粘附缺陷 |
| LAD | Lymphadenopathy | 淋巴腺病 |
| LAD | Light Aid Detachment | 灯光辅助支队 |
| LAD | Location Aid Device | 定位辅助设备 |
| LAD | Liquidated & Ascertained Damages | 清算及确定赔偿 |
| LAD | Language Acquisition Device (brain structure; Chomsky) | 语言习得设备（大脑结构；乔姆斯基） |
| LAD | Linear Application Development | 线性应用程序开发 |
| LAD | Leukocyte Antibody Detection | 白细胞抗体检测 |
| LAD | Limited Assignment Distribution | 有限转让分配 |
| LAD | lymphocyte antigenic determinant | 淋巴细胞抗原决定簇 |
| LAD | left anterior descending(coronary artery) | 左前降支（冠状动脉） |
| LAD | linoleic acid depression | 亚油酸抑制 |
| LAD | Left Axis Deviation | 左轴偏差 |
| LAD | Language Acquisition Device | 语言获取设备 |
| LAD | Line Amplifying Device | 线路放大装置 |
| LAD | Ladino | 拉迪诺 |
| LAD | Least Absolute Deviation | 最小绝对偏差 |
| LAD | Language Assimilation Development | 语言同化发展 |
| LAD | Live A Dream | 梦想成真 |
| LAD | Love, Adore, and Dream | 爱、爱慕和梦想 |
| LAD | Lithia Motors, Inc. | Lithia Motors公司。 |
| LAD | Local Assessment Development | 本地评估开发 |
| LAD | Light Aid Detatchment | 灯光辅助检测 |
| LAD | Last Action Date | 上次操作日期 |
| LAD | Laboratory Aim Density | 实验室目标密度 |
| LAD | Linux Audio Development | Linux音频开发 |
| LAD | Light Antigravity Device | 轻型反重力装置 |
| LAD | Lacking Any Description | 缺少任何描述 |
| LAD | Luanda, Angola | 安哥拉罗安达 |
| LAD | Local Area Disk | 本地磁盘 |
| LAD | Linear Amplitude Distortion | 线性振幅失真 |
| LAD | Launch Area Defense | 发射区防御 |
| LAD | Light Armored Division | 轻型装甲师 |
| LAD | Life After Death (gaming clan; music album) | 死亡后的生活（游戏部落；音乐专辑） |
| LAD | lymphocyte-activating determinant | 淋巴细胞活化决定簇 |
| LAD | Left Axis Deviation (EKG) | 左轴偏差（EKG） |
| LAD | left atrial dimension | 左心房尺寸 |
| LAD | Logistics Assistance Directorate | 后勤援助局 |
| LAD | Lower Anterior Descending artery (graft) | 下前降动脉（移植物） |
| LAD | lipoamide dehydrogenase | 脂酰胺脱氢酶 |
| LAD | Linger And Die (gaming clan) | Linger And Die（游戏部落） |
| LAD | Launch Area(s) Denied (Ballistic Missile Defense System) | 发射区被拒绝（弹道导弹防御系统） |
| LAD | Legislative Audit Division (Montana) | 立法审计部（蒙大拿州） |
| LAD | Left Anterior Descending (anatomical location of coronary artery) | 左前降（冠状动脉的解剖位置） |
| LAD | Launch Assist Device | 启动辅助设备 |
| LAD | License Application Design | 许可证应用程序设计 |
| LAD | Least Absolute Deviation (estimation) | 最小绝对偏差（估计） |