Michael Cassidy

Michael Cassidy (c. 1837 – March 18, 1908) 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 1837 in Ireland, Cassidy immigrated to the United States and was living in New York when he joined the Navy. He served during the Civil War as a landsman on the . At the Battle of Mobile Bay on August 5, 1864, Lackawanna engaged the at close range and Cassidy distinguished himself as the sponger on a gun crew. For this action, he was awarded the Medal of Honor four months later, on December 31, 1864.