Sam Neill Mr. McGregor / Tommy Brock (voice)
Margot Robbie Flopsy Rabbit / Narrator (voice)
Rose Byrne Beatrix 'Bea' Potter / Jemima Puddle-Duck (voice)
Domhnall Gleeson Thomas McGregor / Mr. Jeremy Fisher (voice)
Daisy Ridley Cottontail Rabbit (voice)
Elizabeth Debicki Mopsy Rabbit (voice)
David Wenham Johnny Town-Mouse (voice)
Rachel Ward Josephine Rabbit (voice)
Marianne Jean-Baptiste Harrods General Manager
Sia Mrs. Tiggy-Winkle (voice)
Bryan Brown Mr. Rabbit (voice)
Sacha Horler Betty
James Corden Peter Rabbit (voice)
Will Gluck Writer, Director, Producer
Sam Haft Postman
Ewen Leslie Pigling Bland (voice)
Ming-Zhu Hii Sarabeth
Ben Smith-Petersen Stunt Double
Jermaine Liburd Harrods Security
Fayssal Bazzi Mr. Tod (voice)
Lance Kerfuffle J. David Scarfington
Felix Williamson Derek
Peter Menzies Jr. Director of Photography
P.J. Voeten First Assistant Director
Michael Furniss Visual Effects
Dominic Lewis Original Music Composer
Zoe Liang Second Assistant Director
Will Reichelt JW Rooster II (voice)
Gareth Davies Bannerman
Matt Windon First Assistant "A" Camera
Rob Lieber Writer
Sara Desmond Unit Production Manager
Charmian Gradwell Dialect Coach
Rob Coleman Animation Director
Barney Shakespeare Third Assistant Director
Fletcher Sheridan Singing Sparrow (voice)
Lawrence Woodward Stunt Coordinator
Sally Hague Dialect Coach
Grant Crookes Passerby (uncredited)
Colin Moody Benjamin Bunny (voice)
David Elmes First Assistant "A" Camera
Natalie Dew Janelle
Christian Otty Second Assistant Director
Richard Bradshaw "B" Camera Operator
Ian Jackson Second Assistant "A" Camera
Inaki De Ubago Second Assistant Camera
Christian Gazal Editor, Felix D'eer (voice)
Jessica Friedman Singing Sparrow (voice)
Frank Flick "A" Camera Operator
David Churchyard First Assistant "B" Camera
Andrew Power Second Unit First Assistant Director
Simon Dunn Second Assistant "A" Camera
Danielle Blake Second Second Assistant Director
Christine Luby Third Assistant Director
Chris Upson Visual Effects
Simon Whiteley Production Design
Lorena Pagés Second Assistant Camera
Beatrix Potter Novel
Andrew Jones Second Assistant "B" Camera
Alexandra Gluck London Street Rat (voice)
Dave Lawson Chris
Xander Collier Assistant Director
Naomi Sharp Second Assistant "A" Camera
Jac Norton Second Assistant "B" Camera
Gerard Maher First Assistant "B" Camera
Adrien Seffrin First Assistant Camera
Brian Lynch Associate Producer
Chris Mann Singing Sparrow (voice)
Alex Blias Phil
Jack Mayo First Assistant "B" Camera
Taryn Gluck London Street Rat (voice)
Rebecca Crowe First Assistant Camera