Sir Walter Farquhar, 1st Baronet (October 1738 – 30 March 1819) was a prominent Scottish physician of the late eighteenth and early nineteenth century, whose clientele included many of the leading figures of the day, including the Prince of Wales (later King George IV) and the Prime Minister William Pitt.
Born in Garioch, Farquhar abandoned his medical studies at King's College, Aberdeen to join the British Army as a surgeon during the Seven Years' War.
He later worked as an apothecary in London and qualified as a physician, becoming popular with royalty and politicians and receiving a baronetcy for his services.