- Renée Zellweger as Bridget Jones
- Colin Firth as Mark Darcy
- Hugh Grant as Daniel Cleaver
- Jim Broadbent as Mr. Colin Jones
- Gemma Jones as Mrs. Pamela Jones
- Celia Imrie as Una Alconbury
- James Faulkner as 'Uncle' Geoffrey
- Shirley Henderson as Jude
- Embeth Davidtz as Natasha Glenville
- James Callis as Tom
- Sally Phillips as Sharon "Shazzer"
- Lisa Barbuscia as Lara
- Donald Douglas as Admiral Darcy
- Charmian May as Mrs. Darcy
- Paul Brooke as Mr. Fitzherbert
- Patrick Barlow as Julian
- Felicity Montagu as Perpetua
- Neil Pearson as Richard Finch
- Dolly Wells as Woney
Salman Rushdie, Julian Barnes, Jeffrey Archer[3] and Honor Blackman have cameos in the film.[4]
Andrew Davies, screenwriter of the 1995 television adaptation of Pride and Prejudice, collaborated on the screenplays for the 2001 and 2004 Bridget Jones films and Crispin Bonham-Carter, who played Mr. Bingley in that adaptation, appeared in a minor role. The self-referential in-joke between the projects convinced Colin Firth to accept the role of Mark Darcy,[5] as it gave him an opportunity to ridicule and liberate himself from his Pride and Prejudice character.[6]
