Mary Mouser
— Eloise (voice)
Tim Curry
— Mr. Salamone (voice)
Kathleen Gati
— Miss Thornton (voice)
Lynn Redgrave
— Nanny (voice)
Rob Paulsen
— Bill (voice)
Tara Strong
— Additional voices (voice)
Phil LaMarr
— Additional Voices (voice)
Lauren Tom
— Additional voices (voice)
Jeff Bennett
— Additional Voices (voice)
Clyde Kusatsu
— Additional Voices (voice)
Candi Milo
— Additional voices (voice)
Dionne Quan
— Additional voices (voice)
Matthew Lillard
— Monsieur Ducat (voice)