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)