Freddie Highmore
Arthur Montgomery
Mia Farrow
Daisy Suchot
Adam LeFevre
Davido
Doug Rand
Arthur's Father
Penny Balfour
Rose Montgomery
Ron Crawford
Archibald Suchot
Madonna
Princess Selenia (voice)
David Bowie
Maltazard (voice)
David Suchet
Narrator (voice)
Robert De Niro
King (voice)
Snoop Dogg
Max (voice)
Jean Bejote Njamba
Chief Matassalai (voice)
Lee Delong
Saleslady
Saul Jephcott
Police Officer #1
Christian Erickson
Antique Dealer
Eric Balliet
Mover #1
Oxmo Puccino
Mover #2
Robert William Bradford
Baliff
Jerry Di Giacomo
Repairman
Bienvenue Kindoki
Matassalai #1
Valéry Koko Kingue
Matassalai #2
Aba Koïta
Matassalai #3
Vincent Mendy
Matassalai #4
Mathar Licka Gueye
Matassalai #5
Tonio Descanvelle
Police Officer #2
Chazz Palminteri
Travel Agent (voice)
Jimmy Fallon
Betameche (voice)
Emilio Estevez
Ferryman (voice)
Harvey Keitel
Miro (voice)
Rob Corddry
Seides (voice)
Nate Corddry
Seides (voice)
Erik Per Sullivan
Baby Bug/Mino (voice)
Anthony Anderson
Koolomassai (voice)
Jason Bateman
Darkos (voice)