Arcadia is a town in, and the parish seat of, Bienville Parish in northern Louisiana, United States. The population was 2,919 at the 2010 census. Arcadia has the highest elevation of any incorporated municipality in Louisiana. Arcadia's name commemorates the Ancient Greek region of Arcadia.

Bonnie Elizabeth Parker and Clyde Chestnut "Champion" Barrow were American bandits and serial murderers who traveled the Central United States with their gang during the Great Depression. The couple was known for their bank robberies and multiple murders, although they preferred to rob small stores or rural funeral homes. Their exploits captured the attention of the American press and its readership during what is occasionally referred to as the "public enemy era" between 1931 and 1934. They were ambushed by police and shot to death in Bienville Parish, Louisiana. They are believed to have murdered at least nine police officers and four civilians.