| Gilson Run | |
| Name Other: | Tributary to Pine Creek |
| Map Size: | 300 |
| Map Alt: | Map of the mouth of Gilson Run |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Alt: | Location of the mouth of Gilson Run |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Warren Forest |
| Length: | 2.1miles[1] |
| Discharge1 Location: | Pine Creek |
| Discharge1 Avg: | 7.63cuft/s at mouth with Pine Creek[2] |
| Source1: | divide between Gilson Run and West Hickory Creek |
| Source1 Location: | about 0.5 miles northeast of Pineville, Pennsylvania |
| Source1 Coordinates: | 41.6394°N -79.4981°W[3] |
| Source1 Elevation: | 1490feet[4] |
| Mouth: | Pine Creek |
| Mouth Location: | about 3 miles southwest of McGraw Corners, Pennsylvania |
| Mouth Coordinates: | 41.6433°N -79.5356°W |
| Mouth Elevation: | 1302feet |
| Progression: | northwest |
| River System: | Allegheny River (Oil Creek) |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Tidioute-Enterprise Road |
Gilson Run is a 2.1miles long tributary to Pine Creek in Warren County and Forest Counties, Pennsylvania.
Gilson Run rises about 0.5 miles northeast of Pineville, Pennsylvania in Forest County and then flows northwest into Warren County to Pine Creek about 3 miles southwest of McGraw Corners, Pennsylvania.[4]
Gilson Run drains of area, receives about 44.9 in/year of precipitation, and has a wetness index of 439.04 and is about 93% forested.[2]