| Cast list |
| Carroll Spinney | as | Big Bird / ... (18 episodes, 1969-2006) |
| Frank Oz | as | Bert / ... (15 episodes, 1969-2000) |
| Jim Henson | as | Ernie / ... (15 episodes, 1969-1990) |
| Loretta Long | as | Susan / ... (15 episodes, 1969-1985) |
| Bob McGrath | as | Bob Johnson / ... (13 episodes, 1969-1983) |
| James Catusi | as | Jim (12 episodes, 1969-1970) |
| Brandon Maggart | as | Buddy (12 episodes, 1969-1970) |
| Will Lee | as | Mr. Harold Hooper (10 episodes, 1969-1983) |
| Grace Slick | as | Singer 'Jazz #2' / ... (9 episodes, 1969) |
| Sonia Manzano | as | Maria Figueroa / ... (8 episodes, 1969-2006) |
| Matt Robinson | as | Gordon / ... (8 episodes, 1969-1972) |
| Kevin Clash | as | Elmo / ... (8 episodes, 1985-2006) |
| Martin P. Robinson | as | Telly / ... (8 episodes, 1985-2006) |
