David Laurie Lyon (16 May 1941 – 7 June 2013) was a British stage, television, and film actor. Of Scottish descent, David Lyon was born in 1941 to Joe Lyon, a diamond merchant, and his wife Margaret.

David spent much of his childhood in Sierra Leone where his father worked, before being sent home to be educated at Crofton House in Dumfriesshire in Scotland. He won a scholarship to Merchiston Castle School in Edinburgh, but was forced to leave education at the age of 16 when his father was declared bankrupt.