Francis Joseph Underwood is a fictional character and the protagonist of the American adaptation of House of Cards, portrayed by Kevin Spacey. He is depicted as a ruthless politician who rises from United States House of Representatives majority whip to president of the United States through treachery, deception and murder. He is based on Francis Urquhart, the protagonist of the British novel and television series House of Cards, from which the American Netflix series is drawn. He is married to Claire Underwood, and also had a sexual relationship with Zoe Barnes in season 1. He made his first appearance in the series' pilot episode, "Chapter 1".

House of Cards is an American political thriller television series created by Beau Willimon. It is based on the 1989 novel of the same name by Michael Dobbs and an adaptation of the 1990 British series of the same name by Andrew Davies, also from the novel. The first 13-episode season was released on February 1, 2013, on the streaming service Netflix. House of Cards is the first TV series to have been produced by a studio for Netflix.