TDY
| Acronym | Definition |
|---|---|
| TDY | Temporary Duty (US military) |
| TDY | Teledyne Technologies, Inc. (stock symbol) |
| TDY | Temporary Duty Yonder (military slang) |
| TDY | The Daily Yomiuri (Japan) |
| TDY | Testis-Determining factor on Y |
| TDY | Temporarily Divorced for a Year (servicemember slang) |
| TDY | Tru Dat Yo |
| TDY | Typically Developing Youth |