Leroy Percy State Park, State park in Washington County, United States.

Leroy Percy State Park is a natural area in Mississippi featuring dense forests of cypress and ancient oaks draped in Spanish moss along waterways and spring-fed areas. Winding trails lead through the landscape, where visitors can observe the native plants and creatures living in this wetland habitat.

The park was founded in 1934 and became Mississippi's first state park, created through efforts of the Civilian Conservation Corps during the Great Depression. The initiative to establish this protected area came from former U.S. Senator LeRoy Percy, after whom it was named.

The park is named for LeRoy Percy, a former U.S. Senator from Mississippi. Visitors today can watch alligators in Alligator Lake, fish and boat on the water, hunt, walk the nature trail, and play the disc golf course. Eight cabins and developed and primitive campsites support overnight stays.

The park lies off Mississippi Highway 12, about five miles west of Hollandale. Access is by day pass or overnight campground pass. Camping ranges from primitive sites to developed sites, and eight cabins are rented. Alligator Lake is used for boating and fishing, and a nature trail and picnic areas are laid out for day visits.

Alligator Lake is home to wild alligators that visitors can watch from the shore; the park also holds artesian springs and old-growth oaks. The land was shaped by the Civilian Conservation Corps, which began work here in 1934, making this Mississippi's oldest state park. It lies off Mississippi Highway 12, about five miles west of Hollandale.