- Ruby Barnhill
- Mary
- Louis Ashbourne Serkis
- Peter
- Kate Winslet
- Madam Mumblechook
- Jim Broadbent
- Doctor Dee
- Lynda Baron
- Great-Aunt Charlotte
- Ewen Bremner
- Flanagan
- Morwenna Banks
- Miss Banks
- Teresa Gallagher
- The Red-Haired Witch
- Rasmus Hardiker
- Zebedee
- Rebecca Kidd
- Light Fairy
- Hiromasa Yonebayashi
- Director, Screenwriter
- Riko Sakaguchi
- Screenwriter
- Yoshiaki Nishimura
- Producer
- Geoffrey Wexler
- Producer
- Daisuke Kadoya
- Executive Producer
- Toru Fukushi
- Cinematographer
- Toshihiko Kojima
- Film Editing
- Takatsugu Muramatsu
- Original Music
- Tomotaka Kubo
- Art Director
