Martin James Pflieger Schienle (born July 30, 1982), professionally known as Martin Starr, is an American actor and comedian. He is known for the television roles of Bill Haverchuck on the short-lived comedy-drama Freaks and Geeks (1999–2000), Roman DeBeers on the comedy series Party Down (2009–2010), Bertram Gilfoyle on the HBO series Silicon Valley (2014–2019), for his film roles in Knocked Up (2007) and Adventureland (2009), and as Roger Harrington in the Marvel Cinematic Universe films The Incredible Hulk (2008), Spider-Man: Homecoming (2017), and Spider-Man: Far From Home (2019).
Starr was born in Santa Monica, California, the son of actress Jean St. James (née Pflieger) and James Schienle. Of German, British and eastern European descent, he is a Buddhist.
In an interview with Wired, Starr admitted to feeling "frustrated and depressed" after Freaks and Geeks was cancelled, due to lack of offers at the age of 22. He had fired his agent and decided to quit acting altogether. He trialled for a barista job as well but didn't take it. However, a few years later he was offered Knocked Up, and other offers then started to come his way.