Epsom Common is an area of open space in Surrey, England. Epsom Common and the adjacent Ashtead Common are a biological Site of Special Scientific Interest. Epsom Common is also of archaeological interest and it is a Local Nature Reserve.
The common is to the west of Epsom. A stew pond at the north-eastern end has been extensively developed as a wetland habitat.
The Thames Down Link long distance footpath from Kingston upon Thames to Box Hill station runs through the common.