The Chicago Film Critics Association Award for Best Original Screenplay is one of the annual awards given by the Chicago Film Critics Association.

Winners

2000s

• 2006: The Queen - Peter Morgan
• 2007: Juno - Diablo Cody
  • Before the Devil Knows You're Dead - Kelly Masterston
  • Michael Clayton - Tony Gilroy
  • Ratatouille - Brad Bird
  • The Savages - Tamara Jenkins