July 11, 1975
Evanston, Illinois, U.S.
Jon Wellner (born July 11, 1975) is an American actor, best known for his role as toxicologist Henry Andrews on CSI: Crime Scene Investigation. He has portrayed Andrews through the 2014-2015 season, his 10th with the show.
He began his affiliation with the show in Season 4 as a researcher, verifying that the information on the show was accurate. He had a role as a zookeeper in Season 5, then took on the role of Andrews. He continues to serve as a researcher for the show. In 2009 he and fellow cast member/researcher David Berman formed a company that does research for several other television forensics shows including Bones, CSI: Miami, and Drop Dead Diva.
|Becker||Graduate #2||2001||2 episodes|
|Brown Eyed Girl||Baxter||2001||Video Short|
|The King Of Queens||Keith||2001||Uncredited|
|Surviving Gilligan's Island||Bob Denver||2001||TV Movie|
|Walkin' Free||Johnny No Bones||2002||Video Short|
|The 24 Year-Old Virgin||Dale||2003||Video Short|
|CSI: Crime Scene Investigation||Sam Tracy||2004||1 Episode - Unbearable|
|CSI: Crime Scene Investigation||Henry Andrews||2004–2015||(114 Episodes)|
|Judging Amy||Alan Schein||2005|
|NCIS||Simon Frankel||2005||1 episode - Red Cell|
|Life on a Stick||Kenny||2005|
|That's So Raven||Brad||2005||1 Episode - Food for Thought|
|Twenty Questions||Pierce Lowell||2006|
|Grad Night||Brett Johnson||2006|
|What News?||Tom Thompson||2007|
|Bones||Mike Campbell||2008||1 Episode - The Con Man in the Meth Lab|
|Dude, Where's My Bar?||Monty the Mole||2009||Video Short|
|Drop Dead Diva||Calvin||2011||1 Episode - Mother's Day|
|Major Crimes||Attorney||2012||1 Episode - The Shame Game|
- Starr, Michael (March 20, 2013). "Starr Report". New York Post. Retrieved 29 March 2013.
- DeLeon, Chris (December 13, 2007). "Jon Wellner Talks About His Dual Role on 'CSI'". Buddy TV. Retrieved 29 March 2013.
- Ollison, Rashod (April 26, 2011). "Revealing secrets of producing 'CSI'". The Virginian-Pilot, cited at HamptonRoads.com. Retrieved 29 March 2013.