The Phantom Tollbooth

Butch Patrick

Milo

Mel Blanc

Officer Short Shrift / Dodecahedron / Demon of Insincerity (voice)

Daws Butler

Whether Man / Senses Taker / Terrible Trivium / Gelatinous Giant (voice)

Candy Candido

Awful DYNN (voice)

Hans Conried

King Azaz / The MathemaGician (voice)

June Foray

Ralph / Faintly Macabre / Princess of Pure Reason (voice)

?

Patti Gilbert

Princess of Sweet Rhyme (voice)

Shepard Menken

Spelling Bee / Chroma (voice)

?

Cliff Norton

akofonous A. Dischord / Tollbooth Speaker (voice)

Larry Thor

Tock the Watchdog (voice)

Les Tremayne

Humbug (voice)

?

Michael Earl

Ralph (uncredited)

Chuck Jones

Cable Car Passenger (uncredited)

Thurl Ravenscroft

Lethargian (voice, uncredited)