| Walnut Creek | |
| Name Etymology: | "walnut" |
| Map Size: | 300 |
| Pushpin Map: | USA Pennsylvania |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of Walnut Creek in Pennsylvania |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Pennsylvania |
| Subdivision Type3: | County |
| Subdivision Name3: | Erie |
| Length: | 22.6miles |
| Source1 Location: | Hammett, Erie County, Pennsylvania |
| Source1 Coordinates: | 42.04°N -80.0008°W |
| Source1 Elevation: | 1460feet[1] |
| Mouth: | Lake Erie |
| Mouth Location: | Manchester Beach, Erie County, Pennsylvania |
| Mouth Coordinates: | 42.0769°N -80.2397°W[2] |
| Mouth Elevation: | 572feet |
| Basin Size: | 38.1sqmi |
Walnut Creek is a 22.6miles tributary of Lake Erie in Erie County, Pennsylvania in the United States. It has a drainage basin of and is part of the Lake Erie Watershed.