TCDD
| Acronym | Definition |
|---|---|
| TCDD | 2,3,7,8-Tetrachlorodibenzo-p-Dioxin |
| TCDD | Tetrachlorodibenzodioxin |
| TCDD | Texas Council for Developmental Disabilities |
| TCDD | Türkiye Cumhuriyeti Devlet Demiryollari (Turkish: State Railways of the Republic of Turkey) |
| TCDD | Tanzania Coalition on Debt and Development |
| TCDD | Threshold Contrast Detail Detectability |