John Symonds Lyon Browne (April 13, 1904 – January 21, 1984) was an English-born Canadian physician.He was born in Wembley, London, the son of a civil engineer, and came to Canada with his family in 1905.
In 1912, the family moved to Montreal.
Browne was educated at Westmount High School and at McGill University.
He went on to work in Germany, Austria and England under a travelling fellowship from the Royal Society of Canada.
Browne returned to McGill as a research fellow, later becoming a professor of medicine, Medical Department chairman and director of the Royal Victoria Hospital.
During his time at McGill, he pressed for the addition of more biochemistry and physiology in the undergraduate curriculum for clinical medicine.Browne was named to the Canadian Medical Hall of Fame in 1994 for his efforts to create co-operation between the English and French-speaking physicians of Quebec.