John Douglas (lithotomist)

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John Douglas (died 25 June 1743) was a Scottish lithotomist, a surgeon who specialized in removing bladder stones. He was one of seven sons of William Douglas of Baads, Edinburgh, and his wife, Joan, daughter of James Mason of Park, Blantyre. His brother was Dr James Douglas, physician to the Queen. Douglas served as a surgeon at the Westminster Infirmary for a time and was elected a Fellow of the Royal Society in 1720. He wrote several controversial medical treatises, criticizing the works of Chamberlain, Chapman, and Cheselden. His book on lithotomy was translated into French in 1724.