Jeff Witzke (born 1 April 1970, Grosse Pointe, Michigan) is an American actor, writer, and producer, 1.83 m tall. He attended DePaul University's Theater School and graduated from Michigan State University with honors. He is a frequent collaborator of director Jason Reitman.

Film: Thank You for Smoking (2005), Juno (2007), Up in the Air (2009), Vampires Suck (2010), The Guilt Trip (2012), Labor Day (2013), Money Monster (2016), The Front Runner (2018), Saturday Night (2024, voice of Johnny Carson) Television: Star Trek: Voyager (1995), All That (1994), Almost Perfect (1995–1997), The King of Queens (2001), Family Guy (voice), Bones (2005, 2012), The O.C. (2005, 2006), Workaholics (2011), Marvel's Runaways (2018), Superstore (2019), Jane the Virgin (2019), The Big Ugly (2020)