Simon Maxwell Helberg (born December 9, 1980) is an American actor and comedian. He is widely known for playing Howard Wolowitz on the CBS sitcom The Big Bang Theory (2007–2019) and won the Critics' Choice Television Award for Best Supporting Actor in a Comedy Series for the role. His performance as Cosmé McMoon in the film Florence Foster Jenkins (2016) received a nomination for the Golden Globe Award for Best Supporting Actor – Motion Picture. Helberg has also appeared on the sketch comedy series MADtv as a cast member in season 8 (2002–2003), and his other film roles including Old School (2003), Good Night, and Good Luck (2005), Walk Hard: The Dewey Cox Story (2007), A Serious Man (2009), and Annette (2021).