1. Draper, Hal
  2. Der Hammer (The Hammer)
  3. Du Bois, W.E.B.
  4. De Leon, Daniel
  5. Davis, Angela
  6. "Detroit" Industrial Workers of the World/Workers International Industrial Union
  7. Debs, Eugene V.
  8. Dellinger, David
  9. Dual Unionism
  10. Domingo, Wilfred A.
  11. Dolgoff, Sam
  12. Dissent
  13. Dewey, John
  14. Davis, Benjamin J.
  15. Dada
  16. Di Prima, Diane
  17. Democratic Socialist Organizing Committee
  18. Dell, Floyd
  19. District 65, United Automobile Workers
  20. Dombrowski, James Anderson
  21. Dobbs, Farrell
  22. Dunayevskaya, Raya
  23. Dollinger, Genora Johnson
  24. Disability Rights Movement
  25. Democratic Socialists of America
  26. Dietzgen, Joseph
  27. Dassin, Jules
  28. Direct Action
  29. De Cleyre, Voltairine
  30. Diaz, Abby Morton
  31. Davis, John P.
  32. Duncan, Isadora
  33. Daily Worker
  34. Davis, Mike
  35. Dellums, Ron