Vice-Admiral Sir John Tremayne Rodd, KCB (c. 1769 – 4 October 1838) was an officer of the Royal Navy noted for his services during the Napoleonic Wars. Rodd served in a number of ships, including HMS San Josef under Admiral Sir Charles Cotton and HMS Indefatigable during the Battle of the Basque Roads. In 1809, he married the daughter of James Rennell and in 1825 was promoted to rear-admiral, later advancing to vice-admiral and knighted. He died in 1838.