 Stiller is a supporter of the Democratic Party and donated money to John Kerry's 2004 U.S. Presidential campaign.In February 2007, Stiller attended a fundraiser for Barack Obama and later donated to the 2008 U.S. Presidential campaigns of Democrats Obama, John Edwards, and Hillary Clinton.Stiller supports such charities as Declare Yourself, the Elizabeth Glaser Pediatric AIDS Foundation, and the Starlight Starbright Children's Foundation.