Eloise
Mary Matilyn Mouser
Miss Thornton
Kathleen Gati
Nanny
Lynn Redgrave
Mr. Salamone
Tim Curry
Monsieur Ducat (voice)
Matthew Lillard
(voice)
Curtis Armstrong
Bill (voice)
Rob Paulsen
(voice)
Phil LaMarr
(voice)
Jeff Bennett
(voice)
Lauren Tom
(voice)
Tara Strong
(voice)
Candi Milo
(voice)
Dionne Quan
(voice) / Tutor Candidate #3 (voice) / Secretary
April Winchell
Diamond Jim Johnson (voice)
Brad Garrett
(voice)
Clyde Kusatsu
Philip (voice) / (voice)
Neil Patrick Harris
Bartolome T. Baxter III (voice)
Jim Belushi
Mrs. Hedwig (voice)
Doris Roberts
Mr. Numblitz (voice)
Henry Gibson
Diego (voice)
Nestor Carbonell
(voice)
Lacey Chabert
(voice)
Alan Cumming
(voice)
Jason Marsden
(voice)
Liliana Mumy
(voice)
Cynthia Nixon
(voice)
Kevin Michael Richardson
(voice)
Tony Jay