| Above: | Fort Madison |
| Abovestyle: | background-color: khaki |
| Subheader: | naval base |
| Caption1: | The American fleet at Madisonville in 1813, Fort Madison can be seen at the hill with the flagpole. |
| Headerstyle: | background-color: khaki |
| Label2: | Built by: |
| Data2: |  United States |
| Label3: | Location: |
| Data3: | Nuku Hiva, Marquesas Islands, Pacific Ocean |
| Label4: | In use: |
| Data4: | 1813–1814 |
| Label5: | Wars |
| Data5: | War of 1812 |
Fort Madison, on Nuku Hiva at Taioha'e Bay, was the first naval base of the United States in the Pacific Ocean. It was built by Commodore David Porter in October and November 1813, during the Nuku Hiva Campaign of the Anglo-American War, for protecting the village of Madisonville from British and Marquesan attacks. The fortification was named after President James Madison and armed with four cannons. Fort Madison was attacked only once, by British mutineers, in May 1814, and abandoned soon after.[1]