Bad Girls is a children's novel published in 1996, written by English author Jacqueline Wilson and illustrated by Nick Sharratt.

After an incident where she is nearly hit by a bus while crossing a road to avoid the bullies, she is kept at home from school and meets Tanya, a lively fourteen-year-old girl being fostered by Mandy's across-the-road neighbour.

When Mandy's new year at school begins she has a dedicated, hands-on teacher who proposes a weekly 'circle time' session with the kids: they speak about the reality and consequences of bullying.

The novel ends on a happy note as Tanya (who has dyslexia and hates writing) has with great difficulty written a letter to Mandy, assuring her that they are best friends forever and will one day be free to see each other again as they had dreamed about.

In starred review,[2] they highlighted Wilson's ability to "shap[e] convincing characters, dialogue and plot" in a "tightly written tale" that "proves that bad girls can make for a good story".