Poinsett State Park, State park in Sumter County, United States.

Poinsett State Park is a 1,000-acre (400-hectare) park in Sumter County that combines mountain and coastal environments. Mixed forests, lakes, and distinctive rock formations create varied landscapes throughout the property.

Poinsett State Park was the first South Carolina park built by the Civilian Conservation Corps. Company 421 arrived in October 1934 and built roads, water and power lines, a picnic shelter and restored Old Levi Mill Lake. Company 4475, about 200 African American enrollees, arrived on August 19, 1935, completed the caretaker's house and worked on the bathhouse. The park opened on August 5, 1936.

The park is named after Joel Roberts Poinsett, the first American ambassador to Mexico and the popularizer of the poinsettia. CCC Company 421 published a monthly camp paper, Poinsette Pointers, while Company 4475 published Pine Whispers. Company 4475, an African American unit, was barred from swimming in Old Levi Mill Lake and from the public part of the park outside working hours.

The park provides 25 miles (40 kilometers) of hiking trails and access to a 10-acre (4-hectare) lake for fishing, swimming, and canoeing. Visitors can choose from 50 camping sites or five rental cabins to suit their preferred way of experiencing the outdoor space.

The park sits where mountain and coastal plain species meet and grow side by side, allowing visitors to explore two distinct ecosystems in one location. This geographical overlap creates unusual hiking experiences through ecologically varied terrain.