Four ships of the United States Navy have been named USS Pennsylvania in honor of the second state.
- The first Pennsylvania, 136, was one of nine ships of the line authorized by Congress in 1816 and launched in 1837
- The second Pennsylvania (ACR-4), the lead ship of her class of armored cruiser, was renamed Pittsburgh before serving during World War I.
- The third Pennsylvania (BB-38), the lead ship of her class of battleship, saw action during World War II.
- The fourth Pennsylvania (SSBN-735) is an Ohio-class submarine.