Prof John Lizars FRSE (1792– 21 May 1860) was a Scottish surgeon, anatomist and medical author. He was Professor of surgery at the Royal College of Surgeons of Edinburgh and senior surgeon at the Royal Infirmary of Edinburgh. He performed the first ovariotomy in Scotland in 1825. One of his pupils was Erasmus Alvey Darwin, older brother of Charles Darwin, in 1826 when both brothers were at the university. Besides authoring an early work on the dangers of tobacco, , Lizars published a number of important and beautifully illustrated anatomical texts in the early 19th century.