Fort Adams is a former United States Army post in Newport, Rhode Island, that was established on July 4, 1799, as a First System coastal fortification, named for President John Adams, who was in office at the time. Its first commanding officer was Captain John Henry who was later instrumental in starting the War of 1812. The current Fort Adams was built between 1824 and 1857 under the Third System of coastal forts; it is part of Fort Adams State Park today.