Walter Bruce Willis (born March 19, 1955) is an American actor, producer, and singer. His career began on the Off-Broadway stage and then in television in the 1980s, most notably as David Addison in Moonlighting (1985–89) and has continued both in television and film since, including comedic, dramatic, and action roles. He is also known for his role of John McClane in the Die Hard series, which were mostly critical and uniformly financial successes. He has appeared in over sixty films, including Pulp Fiction (1994), 12 Monkeys (1995), The Fifth Element (1997), Armageddon (1998), The Sixth Sense (1999), Unbreakable (2000), Sin City (2005) and The Expendables 2 (2012).

Motion pictures featuring Willis have grossed US$2.64 billion to 3.05 billion at North American box offices, making him the ninth highest-grossing actor in a leading role and twelfth highest including supporting roles. He is a two-time Emmy Award–winning, Golden Globe Award–winning and four-time Saturn Award–nominated actor. Willis was married to actress Demi Moore and they had three daughters before their divorce in 2000, following thirteen years of marriage. Since 2009, he has been married to model Emma Heming, with whom he has two daughters.