The Chicago Film Critics Association Award for Best Adapted Screenplay is one of the annual awards given by the Chicago Film Critics Association.
| Year | Winner | Writer(s) | Source |
|---|---|---|---|
| 2006 | The Departed | William Monahan | film by Alan Mak Siu-fai and Felix Chong |
| Little Children | novel by Tom Perrotta | ||
| Notes on a Scandal | novel by Zoë Heller | ||
| A Prairie Home Companion | radio variety show by Garrison Keillor | ||
| Thank You for Smoking | novel by Christopher Buckley | ||
| 2007 | No Country for Old Men | novel by Cormac McCarthy | |
| Atonement | novel by Ian McEwan | ||
| Into the Wild | book by Jon Krakauer | ||
| There Will Be Blood | novel by Upton Sinclair | ||
| Zodiac | book by Robert Graysmith | ||
| 2008 | Slumdog Millionaire | Simon Beaufoy | novel by Vikas Swarup |
| The Curious Case of Benjamin Button | short story by F. Scott Fitzgerald | ||
| The Dark Knight | comic by Bob Kane | ||
| Doubt | play by John Patrick Shanley | ||
| Frost/Nixon | play by Peter Morgan | ||
| 2009 | Up in the Air | Jason Reitman and Sheldon Turner | novel by Walter Kirn |
| An Education | memoir by Lynn Barber | ||
| In the Loop | |||
| The Informant! | book by Kurt Eichenwald | ||
| Where the Wild Things Are | book by Maurice Sendak |