Casey Kasem
Norville 'Shaggy' Rogers (voice) (41 eps)
Don Messick
Scooby-Doo (voice) (41 eps)
Frank Welker
Fred Jones (voice) (41 eps)
Nicole Jaffe
Velma Dinkley (voice) (25 eps)
Heather North
Daphne Blake (voice) (24 eps)
Indira Stefanianna
Daphne Blake (voice) (17 eps)
Pat Stevens
Velma Dinkley (voice) (16 eps)
John Stephenson
Samson the Strongman (voice) (12 eps)
Hal Smith
Farmer (voice) (6 eps)
Jean Vander Pyl
Mrs. Cutler (voice) (5 eps)
Vic Perrin
Dr. Najib (voice) (4 eps)
Barry Richards
The Ghost Clown (voice) (uncredited) (2 eps)
June Foray
Gypsy Fortune Teller (voice) (uncredited) (1 eps)
Susan Stewart
Helga (voice) (1 eps)
Keye Luke
Zen Tuo / Mr. Fong (voice) (uncredited) (1 eps)
Michael Stull
The Wax Phantom (voice) (1 eps)