George O'Hanlon
George Jetson (voice)
Penny Singleton
Jane Jetson (voice)
Daws Butler
Elroy Jetson / Veterinarian (voice)
Janet Waldo
Judy Jetson (voice)
Don Messick
Astro / R.U.D.I. / Ghost of Christmas Past (voice)
Jean Vander Pyl
Rosie the Robot (voice)
Mel Blanc
Cosmo S. Spacely (voice)
Frank Welker
Orbitty / Young Mr. Spacely / Teenage Mr. Spacely (voice)
Allan Melvin
Jacob Marsley / Ghost of Christmas Present (voice)