Matthew Brandon Ross is an American actor. He is best known for his roles as Gavin Belson in the HBO series Silicon Valley, Glenn Odekirk in The Aviator, and Luis Carruthers in American Psycho.

Silicon Valley is an American comedy television series created by Mike Judge, John Altschuler and Dave Krinsky. It premiered on HBO on April 6, 2014, and concluded on December 8, 2019, running for six seasons for a total of 53 episodes. Parodying the culture of the technology industry in Silicon Valley, the series focuses on Richard Hendricks, a programmer who founds a startup company called Pied Piper, and chronicles his struggles to maintain his company while facing competition from larger entities. Co-stars include T.J. Miller, Josh Brener, Martin Starr, Kumail Nanjiani, Zach Woods, Amanda Crew, Matt Ross, and Jimmy O. Yang.