James Corden

Peter Rabbit (voice)

Rose Byrne

Bea

Domhnall Gleeson

Mr. Thomas McGregor

David Oyelowo

Nigel Basil-Jones

Margot Robbie

Flopsy Rabbit / The Narrator (voice)

Elizabeth Debicki

Mopsy Rabbit (voice)

Aimee Horne

Cottontail Rabbit (voice)

Colin Moody

Benjamin Bunny (voice)

Lennie James

Barnabas (voice)

Damon Herriman

Tom Kitten (voice)

Hayley Atwell

Mittens (voice)

Rupert Degas

Samuel Whiskers / Little Pig Robinson (voice)

Sia

Mrs. Tiggy-Winkle (voice)

Sam Neill

Tommy Brock (voice)

Ewen Leslie

Pigling Bland (voice)

David Wenham

Johnny Town-Mouse (voice)

Will Reichelt

JW Rooster II (voice)

Christian Gazal

Felix D'eer (voice)

Tim Minchin

Busker K. Bushy, Esq (voice)

Stewart Alves

Mr. Tod (voice)

Faizan Munawar Varya

Ray Rabbit (voice)

Tara Morice

Officiant

Dave Lawson

Chris

Alex Blias

Phil

Jude Hyland

Toy Shop Young Boy

Neil Hayes

Toy Shop Father

Neilesh Ambu

Passerby (uncredited)