Walter Ernest Dixon FRS[1] OBE (2 June 1871 – 16 August 1931) was a British pharmacologist and fellow of the Royal Society.
Dixon became a house physician and then a demonstrator at St. Thomas's in the Department of Physiology.
He was also appointed to Lecturership in Pharmacology at Cambridge University, where he resided, going up to London to King's College, London to deliver his lectures, where he held the post of Professor of Materia Medica and Pharmacology.
During the First World War he played a leading role in a spy ring along the Mediterranean coast of southern Spain that sought to prevent German submarine attacks on British shipping.
Other members of the ring included the general manager of the Great Southern of Spain Railway, George Lee Boag, and the Scottish aristocrat Hugh Pakenham Borthwick.