| ATDD | Adaptive Time Division Duplexing (LMDS) | 自适应时分双工（LMDS） |
| ATDD | Alaska Theater Defense Division | 阿拉斯加战区防御部 |
| ATDD | Atmospheric Turbulence and Diffusion Division | 大气湍流和扩散分区 |
| ATDD | Acceptance Test-Driven Development | 验收测试驱动开发 |
| ATDD | Automatic Telephone Disconnect Device | 自动电话断开装置 |