Southfleet is a small village and civil parish in the borough of Dartford in Kent, England. The village is located three miles southwest of Gravesend, while the parish includes within its boundaries the hamlets of Betsham and Westwood.

Southfleet takes its name from the River Fleet, a minor tributary of the River Thames. The water that supplied the river came from a place called Springhead, where there were watercress and oyster beds; the river then flowed through Southfleet, Ebbsfleet and Northfleet.