Lady Bird is a 2017 American coming-of-age comedy-drama film written and directed by Greta Gerwig in her solo directorial debut, starring Saoirse Ronan, Laurie Metcalf, Tracy Letts, Lucas Hedges, Timothée Chalamet, Beanie Feldstein, Stephen McKinley Henderson, and Lois Smith. Set in Sacramento, California from fall 2002 to fall 2003, it focuses on a high school senior who shares a turbulent relationship with her mother.

In genre studies, a coming-of-age story is a genre of literature, theatre, film, and video game that focuses on the growth of a protagonist from childhood to adulthood, or "coming of age". Coming-of-age stories tend to emphasize dialogue or internal monologue over action and are often set in the past. The subjects of coming-of-age stories are typically teenagers. The Bildungsroman is a specific subgenre of coming-of-age story.