Earl's Sluice

Earl's Sluice
River
The culverted mouth of the Earl's Sluice at Deptford Wharf
Country	England
Counties	Greater London
Tributaries
- right	River Peck
Towns	Deptford
Source	Ruskin Park
- location	Denmark Hill
- coordinates	51°28′0″N 0°5′33″W / 51.46667°N 0.09250°W / 51.46667; -0.09250
Mouth	River Thames
- location	Deptford Wharf
- coordinates	51°29′35.19″N 0°1′55.26″W / 51.4931083°N 0.0320167°W / 51.4931083; -0.0320167Coordinates: 51°29′35.19″N 0°1′55.26″W / 51.4931083°N 0.0320167°W / 51.4931083; -0.0320167

Earl's Sluice is an underground river in south-east London, UK, named after the Earl of Gloucester in the time of Henry I. Its source is Ruskin Park on Denmark Hill. In South Bermondsey it joins with the River Peck before emptying into the Thames at Deptford Wharf.

Earl's Creek marks the boundary between St Mary's parish, Rotherhithe and St Paul's parish, Deptford. Until 1889 this was also the Kent-Surrey boundary.