Nathaniel Wales Faxon is an American actor, comedian, director, and screenwriter, and an Academy Award winner. He won the Academy Award for Best Adapted Screenplay for co-writing The Descendants (2011) and starred in the FOX comedy series Ben and Kate (2012–2013), the FX comedy series Married (2014–2015), and voices Elfo in the adult animated Netflix series Disenchantment (2018–).

He is a graduate of the Los Angeles improv and sketch comedy troupe The Groundlings, where he began performing in 2001.

He is best known for his appearances in comedy films such as Orange County (2002), Walk Hard: The Dewey Cox Story (2007), Bad Teacher (2011), Zookeeper (2011), Tammy (2014), Sex Tape (2014), Life of the Party (2018), Father of the Year (2018), and several Broken Lizard films, including Beerfest (2006). He also appeared in Charlie's Angels (2019).

He starred in Darren Star's semi-autobiographical satire Grosse Pointe and had recurring roles in several television series, such as The Cleveland Show, Joey, All Night Long, and Reno 911!.