Simon Maxwell Helberg (born December 9, 1980) is an American actor, comedian, and musician. He is known for playing Howard Wolowitz in the CBS sitcom The Big Bang Theory (2007–2019), for which he won the Critics' Choice Television Award for Best Supporting Actor in a Comedy Series, and as Cosmé McMoon in the film Florence Foster Jenkins (2016), for which he was nominated for the Golden Globe Award for Best Supporting Actor – Motion Picture.