| Coupler Run | |
| Name Other: | Tributary to Montgomery Run |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Coupler Run mouth |
| Pushpin Map Alt: | Map of Coupler Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Clearfield |
| Length: | 3.04miles[1] |
| Discharge1 Location: | Montgomery Run |
| Discharge1 Avg: | 8.71cuft/s at mouth with Montgomery Run[2] |
| Source1: | Bear Run divide |
| Source1 Location: | about 5 miles east-southeast of Rockton, Pennsylvania |
| Source1 Coordinates: | 41.0686°N -78.5842°W[3] |
| Source1 Elevation: | 2250feet[4] |
| Mouth Location: | about 3 miles northeast of Rockton, Pennsylvania |
| Mouth Coordinates: | 41.0969°N -78.6078°W |
| Mouth Elevation: | 1741feet[5] |
| Progression: | Montgomery Run → Anderson Creek → West Branch Susquehanna River → Susquehanna River → Chesapeake Bay → Atlantic Ocean |
| River System: | Susquehanna River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | US 322 |
Coupler Run is a 3.04miles long 2nd order tributary to Montgomery Run in Clearfield County, Pennsylvania. This is the only stream of this name in the United States.[3]
Coupler Run rises about 5 miles east-southeast of Rockton, Pennsylvania, and then flows north and northwest to join Montgomery Run about 3 miles northeast of Rockton.[5]
Coupler Run drains of area, receives about 46.2 in/year of precipitation, has a wetness index of 452.11, and is about 95% forested.[2]