Template:Protected Areas of Illinois

Apple River • Argyle Lake • Beall Woods • Beaver Dam • Buffalo Rock • Castle Rock • Cave-in-Rock • Chain O'Lakes • Channahon • Delabar • Dixon Springs • Donnelley/Depue • Ferne Clyffe • Fort Massac • Fox Ridge • Franklin Creek • Gebhard Woods • Giant City • Hennepin Canal • Horseshoe Lake • Illini • Illinois Beach • James "Pate" Philip • Jubilee College • Kankakee River • Lake Le-Aqua-Na • Lake Murphysboro • Lincoln Trail • Lowden • Matthiessen • Mississippi Palisades • Moraine Hills • Morrison-Rockwood • Nauvoo • Pere Marquette • Red Hills • Rock Cut • Rock Island Trail • Shabbona Lake • Siloam Springs • South Shore • Starved Rock • Walnut Point • Weinberg-King • White Pines Forest • Wildlife Prairie • William G. Stratton • Wolf Creek

Clinton Lake • Eagle Creek • Eldon Hazlet • Frank Holten • Golconda Marina • Johnson-Sauk Trail • Kickapoo • Moraine View • North Point Marina • Prophetstown • Pyramid • Ramsey Lake • Randolph County • Sangchris Lake • Stephen A. Forbes • Washington County • Wayne Fitzgerrell • Weldon Springs • William W. Powers

Cache River • Fults Hill Prairie • Goose Lake Prairie • Harry "Babe" Woodyard • Illinois Caverns • Kidd Lake • Piney Creek Ravine • Sielbeck Forest • Spitler Woods • Volo Bog