The Lake Bruin State Park is a state park and recreation area in St. Joseph, Louisiana. It features the Lake Bruin and its over three thousand acres of water surface.

Originally established as a fish hatchery in 1928, the Lake Bruin State Park became a park through the legislation signed by Governor Earl Kemp Long in 1956. It was initially known as the Lake Bruin Wayside Park and was later changed into a state park.

The Lake Bruin State Park features facilities that are ideal for fishing, camping, swimming, picnicking, camping, boating, and several kinds of water sports. The site is also equipped with a bath house, barbeque grills, covered pavilions, and large fishing piers. Most of the facilities inside the park are also wheelchair accessible.