David John Townsend (born 17 May 1943, Chippenham, Wiltshire), known professionally as David Simeon, is a British actor. David Simeon began his acting career after being accepted into RADA, the Rose Bruford College and the Guildhall School of Music and Drama.

Ultimately he chose the latter and completed his training in 1964. After years working in Wiltshire rep and Birmingham rep, Simeon began working extensively in theatre and television from the late 1960s. His first television role was as a murderer in Sexton Blake, which Simeon puts down to his honest face being the reason for his casting.