Gordon Graham Calder McKenzie was a consultant surgeon at the Royal Melbourne Hospital, Australia. He was born on 17 July 1916 in Benalla, Victoria, the first child of Alexander Keith McKenzie, a company director, and Florence Victoria McKenzie. He was educated at Geelong College and attended Ormond College at the University of Melbourne. He qualified in 1940. During his training, he was particularly influenced by Henry Searby and Julian Ormond Smith. He was a junior and senior resident medical officer at the Royal Melbourne Hospital from 1941 to 1942, and then joined the Australian Imperial Force, serving until 1946 in the Australian Army Medical Corps as a captain. He returned to the Royal Melbourne Hospital as an associate surgeon. From 1948 to 1954 he was an outpatient surgeon at Prince Henry's Hospital, Melbourne. He then went back to the Royal Melbourne Hospital, where he was outpatient surgeon from 1954 to 1968 and subsequently, from 1968, an inpatient surgeon. He was a registrar for the court of examiners at the Royal Australasian College of Surgeons from 1948 to 1958. Outside medicine he was interested in farming. In 1941, he married Edith Pryor Webb. They had two sons and four daughters. Gordon Graham Calder McKenzie died in 1999.