John Goodwin Gregory Peyton (1752 – 2 August 1809) was an officer in the Royal Navy during the American and French revolutionary wars. As a lieutenant, he fought alongside his father Joseph Peyton, at the Moonlight Battle off Cape St Vincent, and later, in 1798, commanded HMS Defence at the Battle of the Nile. He retired a Rear admiral in 1800 and died in 1809 at the age of 56.