| Cambridge Junction Historic State Park | |
| Photo Width: | 280 |
| Photo Alt: | Tavern |
| Map: | USA Michigan#USA |
| Map Width: | 280 |
| Relief: | 1 |
| Location: | Cambridge Township, Lenawee County, Michigan, United States |
| Nearest City: | Brooklyn, Michigan |
| Coordinates: | 42.0621°N -84.2229°W |
| Designation: | Michigan state park |
| Established: | 1965 |
| Administrator: | Michigan Department of Natural Resources |
Cambridge Junction Historic State Park is a historical preservation area south of Brooklyn in Cambridge Township, Michigan, that includes Walker Tavern, a major stopping place for stagecoaches traveling between Detroit and Chicago in the early nineteenth century.The tavern is operated seasonally by the Michigan History Center. The 80-acre state park includes two additional historic structures: a reconstructed barn with artifacts and exhibits about people, travel and work in the mid-19th century, and the 1929 Hewitt House Visitors Center which focuses on early auto tourism and has displays about well-known 20th-century roadside tourist attractions in the Irish Hills. Additionally, a 1-mile hiking trail encircles the park, crossing both wetlands and forested areas.