Jason Scott Lee as Mowgli

Cary Elwes as Captain William Boone

Lena Headey as Katherine 'Kitty' Brydon

Sam Neill as Colonel Geofferey Brydon

John Cleese as Dr. Julius Plumford

Jason Flemyng as Wilkins

Stefan Kalipha as Buldeo

Ron Donachie as Harley

Anirudh Agarwal as Tabaqui

Faran Tahir as Nathoo

Sean Naegeli as Mowgli, age 5

Joanna Wolff as Kitty, age 5

Liza Walker as Alice

Rachel Robertson as Rose

Natalie Morse as Margaret

Gerry Crampton as Sgt. Major

Amrik Gill as Butler

Rick Glassey as Sgt. Claiborne

Tai the Elephant as Elephant (uncredited)

David Vincent Bobb as British Soldier (uncredited)

Ed Gale as Baby Baloo (uncredited)

Crispian Sallis as Man (Uncredited)