John Southerden Burn was an English doctor and rower who competed for Great Britain in the 1908 Summer Olympics.
Burn was born at Richmond on Thames, the son of Doctor Stacey Burn and his wife Agnes Ellen Warner. His father was in practice at Richmond and his grandfather John Southerden Burn was a solicitor and antiquary.
Burn was a medical student at Cambridge University and rowed for Cambridge in the Boat Race in 1907 and 1908. Burn completed his training at Street Bartholomew"s Hospital and became a House Surgeon there. During World War I he was a temporary Captain in the Royal Army Medical Corps and served as Assistant Surgeon at the Street John's Ambulance Brigade Hospital with the BEF. He was also anaesthetist in the War Hospital at Le Touquet France.
After the war he was in practice with his father as Burn and Burn.
He was also Honorary Surgeon at the Royal Hospital, Richmond and Honorary Anaesthetist at the Star and Garter Home, Richmond.
Burn died at Bognor Regis, Sussex at the age of 74. Burn married Ellen Louisiana Nauze during the war and had three children.