| Acronym | Definition |
|---|
| TDDA➣Trincomalee District Development Association (Sri Lanka) |
| TDDA➣Toronto Digestive Disease Associates (Canada) |
| TDDA➣Tridodecylamine (chemistry) |
| TDDA➣Tryon Downtown Development Association (Tryon, NC) |
| TDDA➣Troy Downtown Development Authority (Troy, MI) |