Jonathan Dickinson State Park, State park in Hobe Sound, Florida.

Jonathan Dickinson State Park is a state park in Hobe Sound, Florida, covering more than 11,500 acres of pine forests, wetlands, and riverbanks along the Loxahatchee River. The landscape shifts between dry sandy areas with tall pines and dense sections where palms and swamp vegetation grow.

The park is named after Jonathan Dickinson, a Quaker merchant shipwrecked with his family and others on the Florida coast near the present-day park in 1696; his journal recounts their encounters with local tribes and the journey up the coast to St. Augustine. In 1942 the U.S. Army established Camp Murphy here, a top-secret radar training school with over 1,000 buildings housing more than 6,000 officers and soldiers. Deactivated in 1944, most buildings were torn down, though some foundations remain; the property passed to Florida in 1947 and opened as a state park in 1950.

The Elsa Kimbell Environmental Education Center displays exhibits about the plants and animals living in the surrounding area. Visitors can learn here how the natural life along the river works and why this landscape is protected.

The concession building rents canoes, kayaks, motor boats, and bicycles for exploring the waterways and trails. Conditions on the trails can vary depending on the season and rainfall, so sturdy footwear is advisable.

The preserved homestead of Trapper Nelson from the 1930s still stands in the park and shows how a lone trapper lived here by the river. In remote corners, remnants of wartime military installations can also be found.