Sam Neill Tommy Brock (voice)
Margot Robbie Flopsy Rabbit / The Narrator (voice)
Rose Byrne Bea
Hayley Atwell Mittens (voice)
Domhnall Gleeson Mr. Thomas McGregor
Elizabeth Debicki Mopsy Rabbit (voice)
David Wenham Johnny Town-Mouse (voice)
David Oyelowo Nigel Basil-Jones
Lennie James Barnabas (voice)
Sia Mrs. Tiggy-Winkle (voice)
Damon Herriman Tom Kitten (voice)
James Corden Peter Rabbit (voice)
Will Gluck Director, Writer, Producer
Brian Lynch Executive Producer
Rupert Degas Samuel Whiskers / Little Pig Robinson (voice)
Tim Minchin Busker K. Bushy, Esq (voice)
Ewen Leslie Pigling Bland (voice)
Peter Menzies Jr. Director of Photography
Tara Morice Officiant
Ronan Binding Animation
Damian Wyvill First Assistant "B" Camera
Dominic Lewis Original Music Composer
Will Reichelt JW Rooster II (voice)
Jude Hyland Toy Shop Young Boy
Patrick Burleigh Writer
Charmian Gradwell Dialect Coach
Rob Coleman Head of Animation
Simon Whiteley Production Design
Jason Lust Executive Producer
Colin Moody Benjamin Bunny (voice)
Roger Ford Production Designer
Neilesh Ambu Passerby (uncredited)
Lizzy Gardiner Costume Designer
Stewart Alves Mr. Tod (voice)
Christian Gazal Felix D'eer (voice)
Aimee Horne Cottontail Rabbit (voice)
Beatrix Potter Novel
Sally Eccleston "C" Camera Operator
Dave Lawson Chris
Reetu Aggarwal 3D Artist
Alex Blias Phil
Aaron Healey Swing
Zareh Nalbandian Producer
Anna Gregory Swing
Oliver Hay Swing
Neil Hayes Toy Shop Father
Emma Topping Executive Producer
Faizan Munawar Varya Ray Rabbit (voice)