| IDTT | Inter-Departmental Task Team | 部门间工作组 |
| IDTT | I'll Drink to That Toastmasters | 我同意国际演讲会 |
| IDTT | Individual Duty for Temporary Training (US DoD) | 临时培训的个人职责（美国国防部） |
| IDTT | Interdisciplinary Treatment Team | 跨学科治疗团队 |
| IDTT | Inactive Duty Training/Travel | 激活任务训练/旅行 |
| IDTT | Inactive Duty Training Travel (US DoD) | 非在职培训旅行（美国国防部） |
| IDTT | I'll Drink to That | 我同意 |