Mrs Caldicot's Cabbage War is a 2002 British comedy-drama film, directed by Ian Sharp and starring Pauline Collins, John Alderton and Peter Capaldi. It is based on a 1993 novel with the same name by author and conspiracy theorist Vernon Coleman.

It is the story about a woman, Thelma Caldicot, who is coerced by her manipulative son Derek and daughter-in-law to move into a run-down nursing home, owned by Derek's employer, after the death of her bullying husband. Derek also gets her to sign over her house to him. However, she doesn't like it at the nursing home and shows her frustration. After having been medicated by the staff to stay calm, she finally incites her fellow inmates to revolt.

The film premiered in June 2002 at the International Filmfest Emden, where it came second in the competition for the Bernhard Wicki Prize. A few weeks later, it participated in the Moscow International Film Festival. The film had its first wide cinema release in United Kingdom and Ireland, where it opened on 31 January 2003.