| Coal Run | |
| Name Other: | Tributary to Chartiers Creek |
| Image Alt: | Coal Run at Hickory Heights, PA |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Coal Run mouth |
| Pushpin Map Alt: | Map of Coal Run mouth location |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Allegheny Washington |
| Length: | 4.37miles[1] |
| Discharge1 Location: | Chartiers Creek |
| Discharge1 Avg: | 4.01cuft/s at mouth with Chartiers Creek[2] |
| Source1: | Millers Run divide |
| Source1 Location: | about 0.25 miles southeast of Cecil, Pennsylvania |
| Source1 Coordinates: | 40.3258°N -80.1717°W[3] |
| Source1 Elevation: | 1145feet[4] |
| Mouth: | Chartiers Creek |
| Mouth Location: | Bridgeville, Pennsylvania |
| Mouth Coordinates: | 40.3494°N -80.1106°W |
| Mouth Elevation: | 812feet[5] |
| Progression: | Chartiers Creek → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Ohio River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Karmann Road, Coal Pit Run Road, Alpine Road, I-79, Washington Pike |
Coal Run is a 4.37miles long 2nd order tributary to Chartiers Creek in Allegheny and Washington Counties, Pennsylvania.
Coal Run rises about 0.25 miles southeast of Cecil, Pennsylvania and then flows northeast to join Chartiers Creek across from Bridgeville.[5]
Coal Run drains of area, receives about 38.8 in/year of precipitation, has a wetness index of 326.44, and is about 43% forested.[2]