| SDL | Specification and Description Language | 说明和描述语言 |
| SDL | Sundsvall, Sweden - Sundsvall (Airport Code) | 瑞典松兹瓦尔-松兹瓦尔（机场代码） |
| SDL | Scottsdale, Arizona - Municipal (airport code) | 亚利桑那州斯科茨代尔市（机场代码） |
| SDL | Space Dynamics Laboratory | 空间动力学实验室 |
| SDL | Sogosogo Duavata Ni Lewenivanua (United Fiji Party, Fiji) | Sogosogo Duavata Ni Lewenivanua（斐济联合党） |
| SDL | Software Development Lohninger | 软件开发Lohninger |
| SDL | Search Digital Libraries | 搜索数字图书馆 |
| SDL | Satellite Data Link | 卫星数据链路 |
| SDL | Systems Development Laboratory (JPL) | 系统开发实验室（JPL） |
| SDL | Surface Data Logging | 地面数据记录 |
| SDL | Statistical Disclosure Limitation | 统计披露限制 |
| SDL | Security Development Lifecycle | 安全开发生命周期 |
| SDL | Simple DirectMedia Layer | 简单DirectMedia层 |
| SDL | Specification and Design Language | 规范和设计语言 |
| SDL | System Design Language | 系统设计语言 |
| SDL | Self Directed Learning | 自主学习 |
| SDL | Schematic Driven Layout | 原理图驱动布局 |
| SDL | Serial Data Link | 串行数据链路 |
| SDL | Signaling Data Link | 信令数据链路 |
| SDL | Structure Description Language | 结构描述语言 |
| SDL | Software Development Library | 软件开发库 |
| SDL | System Description Language | 系统描述语言 |
| SDL | Smartcard Data Log | 智能卡数据日志 |
| SDL | Swingin Down The Lane | 在小巷里摇摆 |
| SDL | Structured Description Language | 结构化描述语言 |
| SDL | Sudden Death League | 猝死联盟 |
| SDL | Parsys hardware network description file | Parsys硬件网络描述文件 |
| SDL | Strings Direct Limited | Strings Direct有限公司 |
| SDL | Simple Direct Layer | 简单直接层 |
| SDL | Sam's Draconic Lizard | 山姆的龙蜥蜴 |
| SDL | Sams Draconic Lizard | 山姆龙蜥蜴 |
| SDL | Software Defined Language | 软件定义语言 |
| SDL | Student Directed Learning | 学生指导学习 |
| SDL | Service Description Language | 服务描述语言 |
| SDL | Superimposed Dead Load | 叠加恒载 |
| SDL | SAW (Surface Acoustic Wave) Delay Line | SAW（表面声波）延迟线 |
| SDL | Sample Detection Limit | 样本检测限 |
| SDL | Supplier Document List | 供应商文件列表 |
| SDL | System Directory List | 系统目录列表 |
| SDL | Switched Delay Line (fiber optics) | 开关延迟线（光纤） |
| SDL | SmartDraw library | SmartDraw库 |
| SDL | Space Disturbances Laboratory | 空间干扰实验室 |
| SDL | Scene Description Language (Alias Wavefront) | 场景描述语言（Alias Wavefront） |
| SDL | Supplementary Defect List | 补充缺陷清单 |
| SDL | Simple Directmedia Library | 简单Directmedia库 |
| SDL | Structured Design Language | 结构化设计语言 |
| SDL | Scenario Description Language | 方案描述语言 |
| SDL | Storage Definition Language | 存储定义语言 |
| SDL | Sundsvall, Sweden | 瑞典Sundsvall |
| SDL | Stammdienststelle der Luftwaffe (German) | 德国空军司令部（德语） |
| SDL | Sensor Data Link | 传感器数据链路 |
| SDL | serum digoxin level | 血清地高辛水平 |
| SDL | speech discrimination loss | 言语辨别损失 |
| SDL | Scouts du Liban (Lebanon) | 黎班童子军（黎巴嫩） |
| SDL | Software Development Laboratory | 软件开发实验室 |
| SDL | Solution Demonstration Laboratory | 解决方案演示实验室 |
| SDL | Screen Definition Language | 屏幕定义语言 |
| SDL | Synchronous Delay Line | 同步延迟线 |
| SDL | Standard Distribution List | 标准分发列表 |
| SDL | Secure Domain Logon | 安全域登录 |
| SDL | Strana DemokratickÉ Levice (Czech Republic) | Strana DemokratickÉ Levice (Czech Republic) |
| SDL | State Designated Level | 州指定级别 |
| SDL | System Design Laboratory | 系统设计实验室 |
| SDL | Shared Distribution List | 共享通讯组列表 |
| SDL | Software Development Lifecycle | 软件开发生命周期 |
| SDL | Subcontractor Data List | 分包商数据列表 |
| SDL | Standard Direct Layer (low level computer graphics) | 标准直接层（低级计算机图形） |
| SDL | Service Delivery Lead | 服务交付负责人 |
| SDL | Specification and Description Language (CCITT) | 规范和描述语言（CCITT） |
| SDL | Soft Defect Localization (scanning laser microscopy methodology) | 软缺陷定位（扫描激光显微镜方法） |
| SDL | Smart Data Loopback (Hekimian) | 智能数据环回（Hekimian） |