| SCDA | Sickle Cell Disease Association | 镰状细胞病协会 |
| SCDA | South Carolina Dental Association | 南卡罗来纳州牙科协会 |
| SCDA | Scottish Community Drama Association | 苏格兰社区戏剧协会 |
| SCDA | Splinter Cell Double Agent (Tom Clancy character) | 分裂细胞双重间谍(汤姆·克兰西饰演) |
| SCDA | Switchable Circular Disk Antenna | 可切换圆盘天线 |
| SCDA | scapulodextra anterior(position of fetus) | 前舟骨(胎儿位置) |
| SCDA | South Carolina Department of Agriculture | 南卡罗来纳州农业部 |
| SCDA | Source Computer Data Application | 源计算机数据应用程序 |
| SCDA | Soybean Casein Digest Agar | 大豆酪蛋白消化琼脂 |