Movies:
* The Fault in Our Stars (2014) as Augustus Waters's (Ansel Elgort) friend, Isaac
* The Cabin in the Woods (2011) as Marty
* 10 Things I Hate About You (1999) as Patrick Verona's friend
* American Psycho (2000) as Paul Allen's assistant
* The Virgin Suicides (1999) as Trip Fontaine
* The Chumscrubber (2005) as a classmate
* The Last Winter (2006) as Joe
* The Informant! (2009) as Mark Whitacre's lawyer
* The Bling Ring (2013) as Detective Gary
Television:
* The Good Wife (2011-2014) as David Lee, a recurring character
* Gossip Girl (2010-2012) as a recurring character
* The O.C. (2004-2007) as a recurring character
* Numb3rs (2005-2010) as a recurring character
* Law & Order: Special Victims Unit (2000-2023) as a recurring character
* The Wire (2002-2008) as a recurring character
This is not an exhaustive list, but it includes some of Khan Chittenden's most recognized roles. He has a diverse filmography and has been involved in both critically acclaimed and commercially successful projects.