Matthew Fox net worth: Matthew Fox is an American actor who has a net worth of $20 million. Matthew Fox made a name for himself playing the oldest of five siblings who lose both parents in a car accident on the 1990s teen drama Party of Five. After the show (which helped him get the attention of international audiences) was canceled following its sixth season, Fox went to star in another TV series, Haunted, in 2002. Next significant role that he played is the one of a dedicated yet troubled surgeon, Dr. Jack Shephard, on another TV show called Lost, from September 2004 until May 2010. Meanwhile, he also took supporting roles in movies like Smokin' Aces (2006), We Are Marshall (2006) and Vantage Point (2008). Having stated that he is "done with television" after Lost, Matthew has since starred in 2011 stage play In a Forest, Dark and Deep and 2012 thriller Alex Cross. Apart from his acting career, he also started a family. In 1992, Fox tied the knot with Margherita Ronchi, with whom has two children, a daughter and a son.