Greta Gerwig Director Saoirse Ronan Lady Bird McPherson Actor Laurie Metcalf Marion McPherson Actor Timothée Chalamet Kyle Scheible Actor Lucas Hedges Danny O'Neill Actor Tracy Letts Larry McPherson Actor Odeya Rush Jenna Walton Actor Jake McDorman Mr. Bruno Actor Beanie Feldstein Julie Steffans Actor Lois Smith Sister Sarah Joan Actor Stephen Henderson Father Leviatch Actor Jordan Rodrigues Miguel McPherson Actor Marielle Scott Shelly Yuhan Actor John Karna Greg Anrue Actor Bayne Gibby Casey Kelly Actor Laura Marano Diana Greenway Actor Scott Rudin Producer Eli Bush Producer Evelyn O'Neill Producer Lila Yacoub Executive Producer Sam Levy Cinematographer Nick Houy Film Editing Jon Brion Original Music Chris Jones Production Design April Napier Costume Design Allison Jones Casting Heidi Griffiths Casting Jordan Thaler Casting