Ham Common is an area of common land in Ham, London. It is a conservation area in, and managed by, the London Borough of Richmond upon Thames. It comprises 48.69 hectares, the second largest area of common land in the borough, 2 acres (0.81 ha) smaller than Barnes Common. It is divided into two distinct habitats, grassland and woodland, separated by the A307, Upper Ham Road. It is an area of ecological, historical and recreational interest, designated a Local Nature Reserve.

Ham is a suburban district in Richmond, south-west London. It has meadows adjoining the River Thames where the Thames Path National Trail also runs. Most of Ham is in the London Borough of Richmond upon Thames and, chiefly, within the ward of Ham, Petersham and Richmond Riverside; the rest is in the Royal Borough of Kingston upon Thames. The district has modest convenience shops and amenities, including a petrol station and several pubs, but its commerce is subsidiary to the nearby regional-level economic centre of Kingston upon Thames.