David Lemuel Keith (born May 8, 1954) is an American actor and director. His breakthrough role was that of aspiring Navy pilot Sid Worley in An Officer and a Gentleman (1982), for which he received Golden Globe nominations for Best Supporting Actor and New Star of the Year – Actor for his performance.

His other notable roles include Jack Murdock in Daredevil (2003), Det. John Mulcahey in Carrie (2002), Master Chief Tom O'Malley in Behind Enemy Lines (2001), Captain Hartigan in Men of Honor (2000), Maj. Matthew Coonen in U-571 (2000), Boone in The Indian in the Cupboard (1995), Jack Parkman in Major League II (1994), Det. Lt. Loach in The Two Jakes (1990), Elvis Presley in Heartbreak Hotel (1988), and Andrew 'Andy' McGee in Firestarter (1984).