Thomas Trotter (1760 – 1832) was a Scottish naval physician and author who was a leading medical reformer in the Royal Navy and an ardent critic of the slave trade. Trotter was born in Melrose, Roxburghshire, and studied medicine under Alexander Monro (secundus) in Edinburgh. His major work, the Medicina Nautica, was published in 1802 and provides a detailed examination of the state of naval medicine during the French Revolutionary Wars.