John S. Belrose (born 24 November 1926) is a Canadian radio scientist.

Belrose was born in the small town of Warner, Alberta. He attended the University of Cambridge, where he was awarded a PhD in 1958. He has worked for the Defence Research Telecommunications Establishment (DRTE) for 33 years. He is a member of the Canadian Amateur Radio Hall of Fame^[1] and, along with Walter Cronkite, was awarded the Radio Club of America's Armstrong Medal on 16 November 2007.^[2]