Walmore Common (grid reference SO740162 & grid reference SO745150) is a 57.78-hectare (142.8-acre) nature reserve on the flood-plain of the River Severn, west of the city of Gloucester in England and north of the village of Chaxhill. It was notified as a biological Site of Special Scientific Interest in 1966. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).