Lebbeus Simkins (1836 – September 10, 1884) was a Union Navy sailor in the American Civil War and a recipient of the U.S. military's highest decoration, the Medal of Honor, for his actions at the Battle of Mobile Bay. Born in 1836 in Utica, New York, Simkins was still living in that state when he joined the Navy. He served during the Civil War as a coxswain on the USS Richmond. At the Battle of Mobile Bay on August 5, 1864, he "performed his duties with skill and courage" despite heavy fire. For this action, he was awarded the Medal of Honor four months later, on December 31, 1864.