| SDD | Sodium Dimethyl Dithiocarbamate | 二甲基二硫代氨基甲酸钠 |
| SDD | Software Design Description | 软件设计说明书 |
| SDD | Secure Document Delivery | 安全文档交付 |
| SDD | Software Design and Development | 软件设计与开发 |
| SDD | Solution Deployment Descriptor | 解决方案部署描述符 |
| SDD | Same Day Delay | 同一天延迟 |
| SDD | System Definition Directive | 系统定义指令 |
| SDD | System Design Document | 系统设计文件 |
| SDD | Solution Design Document | 解决方案设计文档 |
| SDD | Security Design Description | 安全设计说明 |
| SDD | System Development and Demonstration | 系统开发和演示 |
| SDD | System Design Description | 系统设计说明 |
| SDD | Software Development Department | 软件开发部 |
| SDD | Song and Drama Division (India) | 歌曲和戏剧部（印度） |
| SDD | Software Dependability Demonstration | 软件可靠性演示 |
| SDD | Separate Differential Detection | 单独的差异检测 |
| SDD | Soft Decision Demodulation | 软判决解调 |
| SDD | Security Due Diligence | 安全尽职调查 |
| SDD | System Description Document | 系统描述文件 |
| SDD | Significant Developmental Delay | 严重发育迟缓 |
| SDD | Sharnice Miles, DeAndre Drake, Deunte Grimes ( Durfee Middle School, Detroit, Michigan) | Sharnice Miles、DeAndre Drake、Deunte Grimes（密歇根州底特律杜菲中学） |
| SDD | Staff Development Day | 员工发展日 |
| SDD | Stereo Digital Delay | 立体声数字延迟 |
| SDD | Software Detailed Design | 软件详细设计 |
| SDD | Systems Development Division | 系统开发部 |
| SDD | Small Discrete Devices | 小型离散设备 |
| SDD | Sudan Dinar (Currency Unit, ISO) | 苏丹第纳尔（货币单位，ISO） |
| SDD | Supplier Diversity Development | 供应商多元化发展 |
| SDD | Sustainable Design and Development | 可持续设计与发展 |
| SDD | Solvent Decantation Department | 溶剂浸出部 |
| SDD | sporadic depressive disease | 散发性抑郁症 |
| SDD | spontaneous diastolic depolarization | 自发舒张去极化 |
| SDD | Subsystem Device Driver (IBM-ESS) | 子系统设备驱动程序（IBM-ESS） |
| SDD | standard dental dictionary | 标准牙科词典 |
| SDD | Lubango, Angola | 安哥拉卢班戈 |
| SDD | Services and Development Division | 服务和发展司 |
| SDD | Scheduled Delivery Date | 计划交付日期 |
| SDD | Significantly Developmentally Delayed | 严重发育迟缓 |
| SDD | Single Dish Data | 单碟数据 |
| SDD | System Design and Development | 系统设计与开发 |
| SDD | Solar Diffuser Door | 太阳能扩散器门 |
| SDD | Software Development Document | 软件开发文档 |
| SDD | Subject Drop Device | 主题放置设备 |
| SDD | Sudanese Dinar | 苏丹第纳尔 |
| SDD | Sterile Dry Dressing | 无菌干燥敷料 |
| SDD | Strictly Diagonal Dominance | 严格对角优势 |
| SDD | Solution Deployment Descriptor (OASIS) | 解决方案部署描述符（OASIS） |
| SDD | Specific Developmental Disorder | 特定发育障碍 |
| SDD | Soft Decision Decoding | 软判决解码 |
| SDD | Stutter Dialing Device | 斯图加特拨号设备 |
| SDD | System Development Division (IBM) | 系统开发部（IBM） |
| SDD | System Dependent Data | 系统相关数据 |
| SDD | Secure Data Device | 安全数据设备 |
| SDD | Standard Delivery Date | 标准交货日期 |
| SDD | Service Delivery Dashboard | 服务交付仪表板 |
| SDD | Scuba Doo Divers | Scuba Doo潜水员 |
| SDD | Software Design Document | 软件设计文件 |
| SDD | Scottish Development Department (for pollution) | 苏格兰发展部（污染） |
| SDD | Snoop Doggy Dog | 史努比小狗 |
| SDD | Silicon Drift Detector | 硅漂移探测器 |
| SDD | Second Digitized Division (US Army) | 第二数字化师（美国陆军） |
| SDD | Software Data Dictionary | 软件数据字典 |
| SDD | Symbolic Defined Device | 符号定义设备 |
| SDD | Selective Decontamination of the Digestive Tract | 消化道选择性去污 |
| SDD | Subantimicrobial-Dose Doxycycline | 亚抗微生物剂量多西环素 |