Army of One

Army of One may refer to:
 * Army of One (recruiting slogan), the former U.S. Army recruiting slogan

Music

 * Army of One (album), a 2006 album by Riot
 * "Army of One", a song by Phish from the 2004 album Undermind
 * "Army of One", a song by Cass Fox from the 2005 Come Here (Cass Fox album)
 * "Army of One", a song by Coldplay from the 2015 album A Head Full of Dreams

Film and television

 * "Army of One" (The Sopranos), an episode of The Sopranos
 * Joshua Tree (1993 film), a film by Vic Armstrong also known as Army of One
 * Army of One (2016 film), an American comedy film