title: TCDD
text: # TCDD
  
  TCDD may refer to any of the following:
  
  * Turkish State Railways (Türkiye Cumhuriyeti Devlet Demiryolları) - The national railway carrier of Turkey.
     * TCDD Taşımacılık - A Turkish transport company responsible for railway operations.
  * 2,3,7,8-Tetrachlorodibenzodioxin — a type of dioxin.
  * Texas Council for Developmental Disabilities
  