Sir George Johnson FRS (29 November 1818 – 3 June 1896) was an eminent English physician who became recognized as an authority on cholera and kidney diseases.

[2] In 1865 he was appointed a consulting physician to the British Home and Hospital for Incurables, replacing Benjamin Guy Babington, who had resigned.

[2] In 1876, Johnson attempted to treat Charles Bravo, a British lawyer who was fatally poisoned with antimony in what became known as "the Murder at the Priory".

The Lancet of August 1876 published his detailed account of the symptoms, treatment and progress of the illness.

[1] In 1850, Johnson married Charlotte Elizabeth, daughter of Lieutenant William White of Addington, Surrey.

Johnson became recognized as an authority on cholera and on kidney diseases, and published several works on these subjects.

His "stop-cock" theory to explain this finding led to a controversy with Sir William Gull over the "hyaline-fibroid degeneration".

[7] In 1832 William Brooke O'Shaughnessy had proposed saline injections as a way of restoring salts lost through the bowels, which today is considered a rational therapy.

[8] Johnson thought that cholera was caused by a poison in the blood producing right-sided heart congestion.