| Domhnall Gleeson | Mr. McGregor |
| Rose Byrne | Bea |
| James Corden | Peter Rabbit |
| Daisy Ridley | Cotton-tail |
| Elizabeth Debicki | Mopsy |
| Margot Robbie | Flopsy,The Narrator |
| Sam Neill | Older Mr. McGregor |
| Sia | Mrs. Tiggy-Winkle |
| Colin Moody | Benjamin Bunny |
| Christian Gazal | Felix D'eer |
| Ewen Leslie | Pigling Bland |
| Natalie Dew | Harrods Worker - Janelle |
| Terenia Edwards | Harrods Worker - Siobhan |
| Marianne Jean-Baptiste | General Manager |
| Gareth Davies | Bannerman |
| Vauxhall Jermaine | Harrods Security |
| Tom Greaves | Harrods Security |
| Alexandra Gluck | London Streets Rat |
| Taryn Gluck | London Street Rats |
| Samuel Haft | Postman |
| Sacha Horler | Taxi Driver - Betty |
| Will Reichelt | JW Rooster ll |
| Alex Blias | Hardware Clerk - Phil |
| Dave Lawson | Hardware Clerk - Chris |
| Felix Williamson | Derek |
| Ming-Zhu Hii | Sarabeth |
| Rachel Ward | Peter's Mother |
| Bryan Brown | Peter's Father |
| Lance Kerfuffle | J. David Scarfington |
| David Wenham | Johnny Town-Mouse |
| Jyla Mabaso | Small Girl |
| Jessica Freedman | Singing Sparrows |
| Shana Halligan | Singing Sparrows |
| Katharine Hoye | Singing Sparrows |
| Christopher Mann | Singing Sparrows |
| Chad C. Reisser | Singing Sparrows |
| Fletcher Sheridan | Singing Sparrows |
Technical Credits
| Will Gluck | Director,Original Story,Producer,Screenwriter |
| Stewart Alves | Animator |
| Sashdy Arvelo | Animator |
| Christopher Bacon | Animator |
| Viola Baier | Animator |
| Kelly Baigent | Original Story |
| Nikki Barrett | Casting |
| Jason Bath | Associate Producer |
| Doug Belgrad | Executive Producer |
| Jordan Benning | Animator |
| Catherine Bishop | Executive Producer |
| Susan Bolsover | Executive Producer |
| Scott Britton | Animator |
| David Burr | Cinematographer |
| Aaron Burton | Animator |
| Martina Byrne | Makeup |
| Andrea Castagnoli | Animator |
| Jamie Chung | Animator |
| Bruce Creevey | Animator |
| Wende Crowley | Musical Direction/Supervision |
| Jeremy Davidson | Animator |
| Sergio Delfino | Animator |
| Christopher Dias | Animator |
| Jim Dodd | Animator |
| Gary Dodkin | Sound Mixer |
| Andrew Dorr | Animator |
| Damien Drew | Art Director |
| Monette Dubin | Associate Producer |
| Animal Logic Film | Animator |
| Roger Ford | Production Designer |
| Lizzy Gardiner | Costumes/Costume Designer |
| Christian Gazal | Co-producer,Editor |
| Tori Gray | Makeup |
| Jodi Hildebrand | Executive Producer |
| Jonathan Hludzinski | Executive Producer |
| Nick Laurence | Asst. Director |
| Dominic Lewis | Score Composer |
| Rob Lieber | Executive Producer,Original Story,Screenwriter |
| Jason Lust | Executive Producer |
| Brian Lynch | Associate Producer |
| Kate McCowage | Set Decoration/Design |
| Peter Menzies | Cinematographer |
| Zareh Nalbandian | Producer |
| Andrew Power | Asst. Director |
| Tania Richard | Art Director |
| Mary Richards | Production Manager |
| Yvonne Savage | Makeup |
| Felicity Staunton | Associate Producer |
| Peter Stubbs | Special Effects Supervisor |
| Jonathan Tappin | Editor |
| Emma Topping | Executive Producer |
| P.J. Voeten | Asst. Director |
| Jack Wareham | Camera Operator |
| Simon Whiteley | Animator,Production Designer |
