Interlochen State Park is a public recreation area covering 187 acres (76 ha) on the isthmus between Green Lake and Duck Lake in Grand Traverse County, Michigan. The park offers swimming, year-round fishing, picnicking, camping, and boat launches.

Interlochen State Park, originally called Pine Park, was established in 1917 when the Michigan Legislature paid $60,000 for the land, making it the State of Michigan's first officially recognized state park. It was created to preserve for future generations the virgin pine stand (Pinus strobus). It is one of the few easily reached places in Michigan where old-growth (pre-European settlement) red pine can be found.

In 1928, the National Music Camp, Interlochen Center for the Arts was established on the property adjoining the northern boundary of the park.