| Belltown Run | |
| Name Other: | Tributary to Muddy Run |
| Map Size: | 180 |
| Map Alt: | Map of Belltown Run mouth |
| Pushpin Map: | Delaware#USA |
| Pushpin Map Size: | 180 |
| Pushpin Map Alt: | Location of Belltown Run mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Delaware |
| Subdivision Type3: | County |
| Subdivision Name3: | New Castle |
| Length: | 4.49miles[1] |
| Discharge1 Location: | Muddy Run |
| Discharge1 Avg: | 7.92cuft/s at mouth with Muddy Run[2] |
| Source1: | Long Creek divide |
| Source1 Location: | Porter Square, Delaware |
| Source1 Coordinates: | 39.4197°N -75.7381°W[3] |
| Source1 Elevation: | 72feet[4] |
| Mouth: | Muddy Run |
| Mouth Location: | Heather Woods, Delaware |
| Mouth Coordinates: | 39.6303°N -75.6975°W |
| Mouth Elevation: | 19feet |
| Progression: | northeast |
| River System: | Christina River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Waterbodies: | Becks Pond |
| Bridges: | Porter Road, US 40, Salem Church Road |
Belltown Run is a 4.49adj=midNaNadj=mid tributary to Muddy Run in northern New Castle County, Delaware in the United States.
Belltown Run rises on the Long Creek divide New Castle County, Delaware and flows northeast to meet Muddy Run at Heather Woods.
Belltown Run drains of area, receives about 45.2 in/year of precipitation, has a topographic wetness index of 622.53 and is about 18.0% forested.[2]