R. Keith Harris
| Year | Title | Role | Notes |
|---|
| 1997 | Last Lives | Police Officer |
| Digging to China | Flirting Man |
| 1999 | Age to Age | Rob DeVille |
| Legend of Two-Path | English Public official |
| 2001 | Morning | Deputy |
| 2003 | E.V.E | Isaac | Short membrane |
| Roadside Convenience | James |
| Big Fish | Ed's Father |
| 2004 | I Gotta Cat | Little Brother | Short film |
| Shank's Mare | Cadger |
| Chicks 101 | Louie King |
| Pirate Kids: Blackbeard's Lost Treasure | John Cosmonaut Jr. & Sr. |
| 2005 | Junebug | Bud |
| Harvest | Tony Bloodsworth | Short film |
| The Broken Sword | Bill Pierce |
| Booth | John Wilkes Booth |
| 2006 | Walker Payne | State Trooper |
| Pirate Daughters II: The Search for the Silver Skull | John Satchmo Jr. & Sr. |
| Kilroy Was Here | Pilot | Short release |
| Gigi: God's Little Princess | Gigi's Dad |
| 2007 | The List | Bart Maxwell |
| Fall Down Dead | Detective Lawrence Kellog |
| Dog Days of Summer | Pastor Salem/Marty |
| 2008 | April Fool's Day | Seton Motley |
| Lost Stallions: The Journey Home | Mack |
| A Brush with Murder | Det. Harry Morgan | Short film |
| Train Wreck | Owen |
| 2009 | In/Significant Others | Detective Thicke |
| Wesley | Charles Wesley |
| 2010 | The 5th Quarter | Dr. Phillips |
| The Trial | Lt. Town |
| 2011 | Red Dirt Rising | Mr. Nance |
| 2012 | Hatchet County | Capt. Robert Schaner |
| 2013 | Jimmy | Brother Fitzgerald |
| Healthy Heroes: Brain Fries | Various voices | Short film |
| 2014 | Dark Awakening | Mr. Korinthos |
| Hero | Winston Heller |
| 2015 | A Perceive in the Woods | Sam Bryson |
| All They Knew | Michael | Short film |
| Adrenaline | Marcus |
| 2016 | An Innocent Kiss | Billy Barnes |
| Karma's Shadow | John JW Walker | Short film |
| 2017 | Sons of Our Fathers | William Lamb |
| Nobodies | William | Short album |
| County Line | Deputy Sloan |
| 2018 | Shifting Gears | Tom Williamson |
| 2019 | Fever Dreams Movie | Ralph Oates |
| Greener | Jay Cassano |
| The Scout | Joe Cronin |
| Anybody Home? | Thomas | Short film |
| 2020 | Breaking Bread | Unknown |
| 2021 | This Not Too Distant Tomorrow | The Curate | Short film |