The Big Cypress Tree State Park is a state park and natural area in Greenfield, Tennessee. It is located within the bigger Big Cypress Tree Natural Area.

Covering 27 acres worth of area, the Big Cypress Tree State Park is named after the national champion bald cypress tree that once called the site its home. It was once the largest bald cypress in the country, and the largest of any tree species east of the Mississippi River. It was believed to be about 1350 years old when it died in 1976 after being struck by lightning.

Visitors of the Big Cypress Tree State Park can enjoy a lot of recreational activities including picnicking, hiking, camping, and wildlife viewing among others.