| DTSA | Dynamic Time Slot Allocation | 动态时隙分配 |
| DTSA | Seaman Apprentice, Dental Technician Striker (Naval Rating) | 海员学徒、牙科技师罢工（海军等级） |
| DTSA | Desk Top Spectrum Analyzer | 台式频谱分析仪 |
| DTSA | Defense Technology Security Administration | 国防技术保密局 |
| DTSA | Defense Technical Security Agency (now DTRA) | 国防技术安全局（现DTRA） |