Francis Scott Key (August 1, 1779 – January 11, 1843) was an American lawyer, author, and amateur poet from Frederick, Maryland who is best known for writing a poem which later became the lyrics for the United States' national anthem, "The Star-Spangled Banner".

During the War of 1812, Key observed the British bombardment of Fort McHenry in Maryland in 1814. Key was inspired upon viewing the American flag still flying over the fort at dawn, and wrote the poem or lyric "Defence of Fort M'Henry", which was published within a week with the suggested tune the popular song "To Anacreon in Heaven." The song with Key's lyrics became known as "The Star-Spangled Banner," and slowly gained in popularity as an unofficial anthem over the years, finally achieving official status more than a century later under President Herbert Hoover as the United States national anthem.