| Chapel Branch | |
| Name Other: | Tributary to Lewes Creek |
| Map Size: | 180 |
| Pushpin Map: | Delaware#USA |
| Pushpin Map Size: | 180 |
| Pushpin Map Caption: | Location of Chapel Branch mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Delaware |
| Subdivision Type3: | County |
| Subdivision Name3: | Sussex |
| Length: | 6.4miles[1] |
| Discharge1 Location: | Lewes Creek |
| Discharge1 Avg: | 8.45cuft/s at mouth with Lewes Creek[2] |
| Source1: | divide between Chapel Branch and Tanyard Branch |
| Source1 Location: | about 1 mile south of Atlanta, Delaware[3] |
| Source1 Coordinates: | 38.6894°N -75.6769°W[4] |
| Source1 Elevation: | 45feet |
| Mouth: | Lewes Creek |
| Mouth Location: | Seaford, Delaware |
| Mouth Coordinates: | 38.6203°N -75.6378°W |
| Mouth Elevation: | 0feet |
| Progression: | southeast |
| River System: | Nanticoke River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
Chapel Branch is a 6.4miles long tributary to Lewes Creek in Sussex County, Delaware. Lewes Creek then flows into the Nanticoke River.