Jason Reitman Director Elliot Page Juno MacGuff Actor Michael Cera Paulie Bleeker Actor Jennifer Garner Vanessa Loring Actor Jason Bateman Mark Loring Actor Allison Janney Bren Actor J.K. Simmons Mac MacGuff Actor Olivia Thirlby Leah Actor Rainn Wilson Rollo Actor Diablo Cody Writer Lianne Halfon Producer John Malkovich Producer Mason Novick Producer Russell Smith Producer Nathan Kahane Executive Producer Joseph Drake Executive Producer Daniel Dubiecki Executive Producer Eric Steelberg Cinematographer Dana E. Glauberman Film Editing Mateo Messina Original Music Steve Saklad Production Design Michael Diner Art Director Catherine Schroer Art Director Shane Vieau Set Decoration Monique Prudhomme Costume Design Mindy Marin Casting Kara Lipson Casting Kimya Dawson Songs