Brian McKenna (born August 8, 1945 in Montreal, Quebec) is a Canadian documentary film director. He is best known for his prize-winning films on Canadian history and exploration of the world at war. McKenna is a founding producer of CBC's Oscar and Emmy award-winning documentary program, The Fifth Estate, where he worked from 1975 to 1988. McKenna is a former parliamentary correspondent for the Montreal Star. He has been a frequent collaborator with his brother Terence, also a filmmaker, in particular on the three-part series The Valour and the Horror. The most controversial segment in the series concerned strategic bombing during World War II.