D
- Tyne Daly
- Anthony Daniels
- Tony Danza
- Ron Darling
- Terrell Davis
- Geena Davis
- Thom Davies
- Richard Dawson appeared as host of "Family Food", a takeoff on his Family Feud game show
- Ellen DeGeneres sings alphabet song
- Robert De Niro explains what an 'actor' is to Elmo; he turns into a dog, a cabbage, and Elmo.
- Danny DeVito
- The Deadly Nightshade
- Ruby Dee
- Destiny's Child singing "A New Way To Walk"
- Cameron Diaz defines the word "Tree" with Grover, explains "habitat" with the help of the muppet animals
- Bo Diddley
- David Dinkins
- The Dixie Chicks
- Celine Dion
- Plácido Domingo
- Phil Donahue
- Fran Drescher
Read more about this topic: List Of Guest Stars On Sesame Street