SS Jeremiah O’Brien, is a Liberty ship built during World War II and named for American Revolutionary War ship captain Jeremiah O’Brien (1744–1818).

O’Brien is a rare survivor of the 6,939-ship armada that sailed to Normandy on D-Day, 1944, and one of only two currently operational WWII Liberty ships afloat of the 2,710 built during the war (the other being the SS John W. Brown based in Baltimore).