Two ships of the United States Navy have been named USS Iowa in honor of the 29th state.

A monitor originally named Ammonoosuc that was never commissioned was renamed Iowa before being sold.

The first Iowa was a battleship that saw action during the Spanish-American War.

The Iowa was a battleship already under construction when she was canceled by the Washington Naval Treaty.

The second Iowa was a battleship that saw action during World War II, the Korean War, and the Vietnam War.