Beauregard Parish (French: Paroisse de Beauregard) is a parish located in the U.S. state of Louisiana. Beauregard Parish was formed on 1 January 1913. The parish seat is DeRidder. As of 2000, the population was 32,986. Beauregard Parish is part of the DeRidder Micropolitan Statistical Area as well as the Fort Polk South–DeRidder Combined Statistical Area. The governing body is by the police jury system.