Filmography
| Year | Film | Role | Notes |
|---|---|---|---|
| 1999 | Galaxy Quest | Brandon | |
| 2001 | Happy Campers | Donald | |
| Jeepers Creepers | Darry Jenner | ||
| 2002 | Crossroads | Henry | |
| 2003 | Jeepers Creepers 2 | Darry Jenner | |
| 2004 | Raising Genius | Hal Nestor | |
| Hair High | Dwayne | Voice role | |
| DodgeBall: A True Underdog Story | Justin | ||
| Wake Up, Ron Burgundy: The Lost Movie | Chris Harken | Straight-to-DVD | |
| 2005 | Robin's Big Date | Robin | Short Film |
| Waiting... | Dean | ||
| Herbie: Fully Loaded | Kevin | ||
| 2006 | The Sasquatch Gang | Zerk Wilder | |
| That '70s Show | Andrew Davis | TV Show: 1 Episode | |
| Dreamland | Mookie | ||
| The Break-Up | Christopher Hirons | ||
| Accepted | Bartleby “B” Gaines | ||
| Idiocracy | Dr. Lexus | ||
| 2007 | Live Free or Die Hard | Matt Farrell | |
| Battle for Terra | Senn | Voice role | |
| Alvin and the Chipmunks | Alvin | ||
| Walk Hard: The Dewey Cox Story | George Harrison | Uncredited | |
| 2008 | Strange Wilderness | Junior | |
| Just Add Water | Spoonie | ||
| Zack and Miri Make a Porno | Brandon St. Randy | ||
| Pineapple Express | Justin | Deleted Scene | |
| 2009 | He's Just Not That into You | Alex | |
| Still Waiting... | Dean | Uncredited | |
| Taking Chances | Chase Revere | Straight-to-DVD | |
| Serious Moonlight | Todd | ||
| Drag Me to Hell | Clay | ||
| Funny People | Himself | ||
| Planet 51 | Lem | Voice role | |
| Old Dogs | Troop Leader Adam Devlin | Uncredited | |
| After.Life | Paul | ||
| Alvin and the Chipmunks: The Squeakquel | Alvin | Voice role | |
| 2010 | Youth in Revolt | Paul Saunders | |
| Going the Distance | Garrett | ||
| Alpha and Omega | Humphrey | Lead voice role | |
| 2011 | The Conspirator | Nicholas Baker | |
| Ten Year | Luke Burn | ||
| Alvin and the Chipmunks: Chipwrecked | Alvin | Voice role | |
| New Girl | Paul Genzlinger | Episodes: 1.6, 1.8, 1.9 & 1.23 | |
| 2012 | Unsupervised | Gary | Lead voice role |
| For a Good Time, Call... | Jesse | ||
| 2013 | Movie 43 | Robin |
Read more about this topic: Justin Long