The St. Louis Gateway Film Critics Association Award for Best Supporting Actor is one of the annual awards given by the St. Louis Gateway Film Critics Association.
| Year | Winner | Film | Role |
|---|---|---|---|
| 2004 | Thomas Haden Church | Sideways | Jack Lopate |
| 2005 | George Clooney | Syriana | Bob Barnes |
| 2006 | Djimon Hounsou | Blood Diamond | Solomon Vandy |
| 2007 | Casey Affleck | The Assassination of Jesse James... | Robert Ford |
| 2008 | Heath Ledger posthumously | The Dark Knight | The Joker |
| 2009 | Christoph Waltz | Inglourious Basterds | Col. Hans Landa |
| Year | Nominee | Film | Role |
|---|---|---|---|
| 2010 | Christian Bale | The Fighter | Dicky Eklund |
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