Daisy State Park is a 276-acre (112 ha) Arkansas state park in Pike County, Arkansas in the United States. The park at the foothills of the Ouachita Mountains features Lake Greeson, a 7,000-acre (2,800 ha) fishing lake constructed by the United States Army Corps of Engineers in 1950. The park is surrounded by timberlands and is located near the Ouachita National Forest.