Patrick Bruce Lockhart (25 May 1918 — 6 August 2009) was a Scottish-born obstetrician-gynaecologist who worked in Scotland, India, England, and Canada.
He became Speaker of the Council of the Canadian Medical Association and was an emeritus professor of the Royal College of Obstetricians and Gynaecologists.
He was educated at the Edinburgh Academy from 1932 to 1936, where apart from academic work he learned the piano and violin, winning a prize for music, and represented the school at fencing.
He was also appointed as an emeritus professor by the Royal College of Obstetricians and Gynaecologists in London, a rare honour for those working overseas.
In 1962, Lockhart made the counter-proposal that the status quo should continue, but with the Ontario government funding the eight to ten per cent of the population without private health insurance.