Sir Joseph Fayrer, 1st Baronet FRS FRSE FRCS FRCP KCSI LLD (6 December 1824 – 21 May 1907) was a British physician who served as Surgeon General in India. He is noted for his writings on medicine, work on public health and his studies particularly on the treatment of snakebite, in India. He was also involved in official investigation on cholera, in which he did not accept the idea, proposed by Robert Koch, of germs as the cause of cholera.