Series Cast 36

1. 

   Henry Winkler

   Arthur Fonzarelli (22 Episodes)

2. 

   Tom Bosley

   Howard Cunningham (22 Episodes)

3. 

   Marion Ross

   Marion Cunningham (22 Episodes)

4. 

   Anson Williams

   Potsie Weber (22 Episodes)

5. 

   Cathy Silvers

   Jenny Piccalo (22 Episodes)

6. 

   Ted McGinley

   Roger Phillips (22 Episodes)

7. 

   Linda Purl

   Ashley Pfister (22 Episodes)

8. 

   Crystal Bernard

   K.C. Cunningham (15 Episodes)

9. 

   Heather O'Rourke

   Heather Pfister (12 Episodes)

10. 

    Billy Warlock

    Flip Phillips (12 Episodes)

11. 

    Pat Morita

    Arnold (8 Episodes)

12. 

    Scott Baio

    — (6 Episodes)

13. 

    Kevin Rodney Sullivan

    Tommy (5 Episodes)

14. 

    Al Molinaro

    — (2 Episodes)

15. 

    Ed Peck

    — (2 Episodes)

16. 

    Marla Adams

    — (1 Episode)

17. 

    Sue Ane Langdon

    — (1 Episode)

18. 

    Rita Wilson

    — (1 Episode)

19. 

    Harriet Nelson

    — (1 Episode)

20. 

    Wendy Schaal

    — (1 Episode)

21. 

    Dean Devlin

    — (1 Episode)

22. 

    Frances Bay

    — (1 Episode)

23. 

    Ian Abercrombie

    — (1 Episode)

24. 

    Martin Ferrero

    — (1 Episode)

25. 

    Richard Paul

    — (1 Episode)

26. Robert Pierce

    — (1 Episode)

27. 

    Tony Longo

    — (1 Episode)

28. 

    Larry Poindexter

    — (1 Episode)

29. 

    Tom Hanks

    — (1 Episode)

30. 

    Peter Scolari

    — (1 Episode)

31. Patti Cohenour

    — (1 Episode)

32. Joe Mays

    — (1 Episode)

33. 

    Dick Yarmy

    — (1 Episode)

34. 

    Ellen Travolta

    — (1 Episode)

35. 

    Tammy O'Rourke

    Tammy (1 Episode)

36. Michael Morgan

    Don Mitchell (1 Episode)

Series Crew 8