Thomas Lyons (1838–29 August 1904) was a seaman in the United States Navy. On 24 April 1862 he was on board USS Pensacola during the attack on Fort Jackson and Fort Saint Philip . Lashed outside of that vessel, on the port-sheet chain, with the lead in hand to lead the ship past the forts, Lyons never flinched, although under a heavy fire from the forts and Confederate gunboats. His actions earned the Medal of Honor.