| Big Run State Park | |
| Map: | USA Maryland |
| Map Size: | 280 |
| Relief: | 1 |
| Location: | Garrett County, Maryland, United States |
| Nearest Town: | Grantsville, Maryland |
| Coordinates: | 39.545°N -79.1372°W |
| Area Acre: | 300 |
| Elevation: | 1483feet |
| Designation: | Maryland state park |
| Established: | 1930s |
| Administrator: | Maryland Department of Natural Resources |
| Website: | Big Run State Park |
Big Run State Park is a public recreation area located at the northern end of the Savage River Reservoir, an impoundment of the Savage River, in Garrett County, Maryland. The state park occupies in Savage River State Forest and encompasses the confluence of Monroe Run and Big Run. Park activities include boating, fishing, hiking, picknicking, and camping.
The park originated as the 50acres Big Run Recreation Area, one of several Maryland areas that were developed by the Civilian Conservation Corps in the 1930s. In 1952, the Maryland State Planning Commission recommended that the "lightly used" recreation area be expanded to take advantage of its location on the reservoir that had been newly created on the Savage River.
The park is accessible on New Germany Road from Interstate 68, Exit 24. It offers primitive campsites, group campsites, youth group campsite, and pavilions. Picnicking facilities are located in the park's day use area. The Savage River Reservoir is used for non-motorized boating, electric motoring, and fishing. Facilities include a boat ramp. Fishermen may find walleye, largemouth bass, crappie, yellow perch, bluegill, suckers and trout. The Monroe Run hiking trail and other trails are accessible from the state park. The adjacent Savage River State Forest has trails for multi-purpose use including snowshoeing or snowmobiling.