From Wikipedia, the free encyclopedia John Allen Nelson (born August 28, 1959) is an American actor.
| Series | Crazy Ex-Girlfriend | Silas Bunch | 2015-10-12 |
| Series | Crisis | President Devore | 2014-03-16 |
| Series | Red Band Society | Jon Chota | 2014-09-17 |
| Movie | Feast III: The Happy Finish | Shitkicker | 2009-02-17 |
| Series | Drop Dead Diva | D.A. Callahan | 2009-07-12 |
| Series | Castle | Walter Dennis | 2009-03-09 |
| Series | Privileged | Unknown | 2008-09-09 |
| Series | Burn Notice | Unknown | 2007-06-28 |
| Series | Saving Grace | Unknown | 2007-07-23 |
| Series | Vanished | Jeffrey Collins | 2006-08-21 |
| Series | Close to Home | Unknown | 2005-09-20 |
| Series | Grey's Anatomy | Unknown | 2005-03-27 |
| Series | Criminal Minds | Dan Murphy | 2005-09-22 |
| Movie | Baywatch: Hawaiian Wedding | John D. Cort | 2003-02-28 |
| Series | NCIS | JSOC Vice Admiral Lloyd Manditsky | 2003-09-23 |
| Series | CSI: Miami | Unknown | 2002-09-23 |
| Series | Without a Trace | Unknown | 2002-09-26 |
| Series | 24 | Walt Cummings | 2001-11-06 |
| Series | CSI: Crime Scene Investigation | Roger Gentry | 2000-10-06 |
| Series | Sheena | Matt Cutter | 2000-10-07 |
| Movie | Shelter | Martin Roberts | 1998-01-16 |
| Series | Seven Days | Unknown | 1998-10-07 |
| Series | Early Edition | Unknown | 1996-09-28 |
| Movie | XXX's & OOO's | Andy St. James | 1994-06-21 |
| Series | Sweet Justice | 1994-09-15 | |
| Movie | Criminal Passion | Connor Ashcroft | 1994-09-21 |
| Series | Friends | Paul | 1994-09-22 |
| Movie | Rich Men, Single Women | Travis | 1990-01-29 |
| Movie | Perry Mason: The Case of the Lethal Lesson | Frank Wellman Jr. | 1989-02-12 |
| Series | Quantum Leap | Unknown | 1989-03-26 |
| Series | Booker | Unknown | 1989-09-24 |
| Series | Baywatch | John D. Cort | 1989-04-23 |
| Movie | Saigon Commandos | Timothy Bryant | 1988-01-01 |
| Movie | Deathstalker III: The Warriors from Hell | Deathstalker | 1988-01-01 |
| Movie | Killer Klowns from Outer Space | Dave Hanson | 1988-05-27 |
| Movie | Hunk | Hunk Golden | 1987-03-06 |
| Series | Matlock | Unknown | 1986-03-03 |
| Series | Murder, She Wrote | Unknown | 1984-09-30 |
| Series | Scarecrow and Mrs. King | Unknown | 1983-10-03 |