Harold Lang was born in 1923 in London, England.
He was a RADA trained British character actor of stage and screen. During the 1950s he played many sly or menacing roles in B-films, and at one time managed his own theatrical company.
He was also a well-known teacher of acting in London drama schools, and was seen at work in this field in the TV documentary Monitor: The Class (1961), directed by John Schlesinger.
Harold lang died on 16 November 1970 in Cairo, Egypt, he was 47.