| South Fork Tomlinson Run | |
| Name Other: | Tributary to Tomlinson Run |
| Map Size: | 300 |
| Pushpin Map: | USA West Virginia#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of South Fork Tomlinson Run mouth |
| Pushpin Map Alt: | Map of South Fork Tomlinson Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | West Virginia Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Hancock Beaver |
| Length: | 6.92miles[1] |
| Discharge1 Location: | Tomlinson Run |
| Discharge1 Avg: | 11.16cuft/s at mouth with Tomlinson Run in Tomlinson Run Lake[2] |
| Source1: | Mill Creek divide |
| Source1 Location: | about 5 miles southwest of Hookstown, Pennsylvania |
| Source1 Coordinates: | 40.5678°N -80.5042°W[3] |
| Source1 Elevation: | 1220feet[4] |
| Mouth: | Tomlinson Run |
| Mouth Location: | Tomlinson Run State Park in Tomlinson Run Lake |
| Mouth Coordinates: | 40.54°N -80.585°W |
| Mouth Elevation: | 913feet[5] |
| Progression: | Tomlinson Run → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Ohio River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Pumpkin Hollow Road, Gas Valley Road, Patterson Road, Gas Valley Road, Carson Road, Pittinger Road, Tomlinson Run Park Road |
South Fork Tomlinson Run is a 6.92miles long 2nd order tributary to Tomlinson Run in Hancock County, West Virginia. This stream along with North Fork Tomlinson Run, forms Tomlinson Run in Tomlinson Run Lake.
South Fork Tomlinson Run rises about 5 miles southwest of Hookstown, Pennsylvania, in Beaver County and then flows west into Hancock County, West Virginia to form Tomlinson Run at Tomlinson Run State Park.[5]
South Fork Tomlinson Run drains of area, receives about 38.3 in/year of precipitation, has a wetness index of 334.56, and is about 59% forested.[2]