Hontoon Island State Park, State park on the St. Johns River in Volusia County, Florida.

Hontoon Island State Park covers 1,648 acres (6.67 km2) on an island between the St. Johns River and the Hontoon Dead River in Volusia County, six miles west of DeLand off SR 44. It holds pine flatwoods, palm and oak hammocks, bald cypress swamps and marshes, and is reached only by boat or park-operated passenger ferry. Along the shore, a low retaining wall of stacked rough-cut grey and tan stones follows the waterline, with a flat grassy strip behind it.

The first inhabitants of Hontoon Island were the Mayacan Indians, whose presence is still marked by a large shell mound at the end of the Hammock Trail, 1.7 miles one way. The island later passed through pioneer, fishing and ranching use before becoming a Florida state park.

The island's name and its shell mound at the end of the 1.7-mile Hammock Trail are tied to the Mayacan, its first recorded inhabitants; the mound is the main trace of them a visitor can still see. The park keeps a lending library of picture books for children aged four to nine, and canoe, kayak and bicycle rentals are part of how the island is used today.

Hontoon Island is reached only by boat or the park-run passenger ferry; no motorized vehicles except wheelchairs may be brought over, and there is no swimming. The park opens at 8:00 am and closes one hour before sunset year-round. Bicycles, canoes and kayaks are rented on site and must be returned by 5 p.m., with no refunds for bad weather. Eleven tent sites and six rustic cabins take overnight guests.

The Mayacan were the island's first inhabitants, and a large shell mound survives at the end of the Hammock Trail, 1.7 miles one way, mostly under shade. The park also lends picture books for children aged four to nine.