William Edward Lamar Rothhaar (born January 12, 1987) is an American actor.
He briefly lived in the little resort town of Boiling Springs, Pennsylvania, where he started doing theatre, but grew up on the west side of Los Angeles and attended Alexander Hamilton High School. Will Rothhaar podcast interview, boxangeles.com; accessed March 4, 2014.
| 1996 | Kingpin | Young Roy Munson | |
| 1996 | American Strays | Jordan | |
| 1998 | Jack Frost | Dennis | |
| 2000 | Love & Sex | 9-year-old Bobby | |
| 2001 | Hearts in Atlantis | John Sullivan | |
| 2002 | Now You Know | Eddy | |
| 2003 | Kart Racer | Watts Davies | |
| 2005 | Must Love Dogs | Jeremy | |
| 2006 | Love Is the Drug | Trevor | |
| 2007 | King of California | Security guard | |
| 2008 | 33 Griffin Lane | Rodney | |
| 2008 | Just Add Water | Dirk | |
| 2009 | 16 to Life | Carson | |
| 2009 | Chase | ||
| 2010 | Radio Free Albemuth | Ted Pollet | |
| 2010 | Piano Fingers | Young Howard | Short film |
| 2011 | Cpl. Lee "Cowboy" Imlay | ||
| 2011 | Getting That Girl | Ned Fouler | |
| 2012 | Within | Marc | Short film |
| 2012 | Mickey Finn | Corbin Kane | Short film |
| 2013 | Mission Park | Julian | |
| 2014 | Phil | Short film | |
| 2016 | Like a Butterfly | Nick | |
| 2016 | Pale Blue | Ryan | Short film |
| 2016 | Wake Up America! | Joe | |
| 2017 | Division 19 | Nash | |
| 2018 | Benji | Syd | |
| 2020 | Final Kill | Ron Wembly | |
| 1994 | Dave's World | Episode: "Six Years Old and All Washed Up" | |
| 1995 | Kidnapped: In the Line of Duty | Donny Lindstrom | Television film |
| 1995 | Letter to My Killer | Danny | Television film |
| 1995 | Dr. Quinn, Medicine Woman | School boy #2 | 2 episodes (1 uncredited) |
| 1995–1998 | JAG | Josh Pendry | 4 episodes |
| 1996 | Innocent Victims | Matt Richardson | Television film |
| 1996 | Pacific Blue | Martin | Episode: "Point Blank" |
| 1997 | Journey of the Heart | Young Ray Johnston | Television film |
| 1997 | Spy Game | Kid | Episode: "Necessity Is the Mother of Infection" |
| 1997 | Buffy the Vampire Slayer | James | Episode: "Lie to Me" |
| 1998 | Mad About You | Logan | Episode: "The Coin of Destiny" |
| 1999 | Chicken Soup for the Soul | Michael | Episode: "From the Heart" |
| 1999 | Black and Blue | Robert Benedetto | Television film |
| 2000 | Fail Safe | Tommy Grady | Television film |
| 2000 | Kip | Television film | |
| 2000 | Hang Time | Kid #1 | Episode: "At the Movies" |
| 2001 | ER | Robert "Bo" Borsalino | Episode: "Survival of the Fittest" |
| 2001 | On Golden Pond | Billy Ray | Television film |
| 2001 | Family Law | Gary | Episode: "Against All Odds" |
| 2002 | Judging Amy | Anthony Cossey | Episode: "Not Stumbling, But Dancing" |
| 2002 | Dale Fante | Episode: "The Living" | |
| 2004 | Rollercoaster operator | Episode: "Turn of the Screws" | |
| 2004–2005 | Listen Up | Mickey Kleinman | Main cast; 22 episodes |
| 2005 | Criminal Minds | Cory Bridges | Episode: "The Popular Kids" |
| 2006 | Without a Trace | Matt Jameson | Episode: "The Road Home" |
| 2006 | Cold Case | Neal Hanlon in 1995 | Episode: "Rampage" |
| 2007 | Standoff | Jerome "Rome" Kaden | Episode: "Kids in the Hall" |
| 2007 | K-Ville | Sean Rieger | Episode: "Critical Mass" |
| 2008 | Martin Bedell | Episode: "" | |
| 2008 | Win | Episode: "Red Tide" | |
| 2009 | Ghost Whisperer | Tim Dwight | Episode: "Slow Burn" |
| 2010 | CSI: Crime Scene Investigation | Sean Becker | Episode: "World's End" |
| 2010 | Fringe | Wyatt Toomy | Episode: "The Abducted" |
| 2011 | Memphis Beat | Dean Harrison | Episode: "The Feud" |
| 2011 | Ricky Galindo | Episode: "Countermeasures" | |
| 2012 | Luke Shelton | Episode: "Near Death" | |
| 2012 | Perception | Eddie Leviseur | Episode: "Cipher" |
| 2012–2013 | Last Resort | Josh Brannan | 7 episodes |
| 2013 | Killing Kennedy | Lee Harvey Oswald | Television film |
| 2014 | Reckless | Max Carlyle | Episode: "Bloodstone" |
| 2014 | Castle | Jared Stone | Episode: "Kill Switch" |
| 2014–2015 | Grimm | Officer Jesse Acker | 3 episodes |
| 2015 | Orin Trotwood | Episode: "Capsize" | |
| 2016 | Code Black | Henry | Episode: "The Fifth Stage" |
| 2009–11 | Workshop | Junior Agent | 9 episodes |
| 2012–13 | Sloppy Tacos | Wesleyan | 2 episodes |
| 2014 | Dylan | 3 episodes | |
| 2015 | 427 | Officer Thompson | Episode: "Pilot" |
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