The Pledge of Allegiance of the United States is an expression of allegiance to the flag of the United States and the republic of the United States of America. Pledge of Allegiance may also refer to: Pledge of Allegiance (The Bahamas) Pledge of Allegiance (South Korea) Pledge of Allegiance to the Mexican Flag Pledge of Allegiance to the Philippine Flag "Pledge of Allegiance", an episode of NCIS (season 19) "Pledge of Allegiance" (song), by DJ Drama Pledge of Allegiance building, or Youth's Companion Building, in Boston, Massachusetts, U.S. See also In God We Trust (disambiguation) One Nation Under God (disambiguation) Pledge of Allegiance Tour: Live Concert Recording, a live album by System of a Down, Slipknot, Mudvayne, American Head Charge and No One Oath of allegiance