Isaac Buxton (6 May 1773 – 1 July 1825) was an English physician who specialised in the treatment of asthma, consumption and other pulmonary diseases.

He was a foundation scholar at St Paul's School and then was apprenticed for five years to his brother-in-law, a seed merchant named Wrench.

He acquired his doctorate in 1802, with a thesis likely to have been on a study of man as a ruminant, a topic possibly inspired by the enthusiasm in Göttingen at the time for comparative anatomy.

[1] On his return to London in 1802, Buxton became dresser to Astley Cooper at Guy's Hospital and in 1805 received his medical licence from the Royal College of Physicians.

The topic preoccupied him at a time when it was not a common concern among physicians and he tried to keep his sick rooms at a constant temperature of 60-65 degrees Fahrenheit in the winter months for any patient with a cough or consumption.