Ranmore Common, also known as Ranmore Commons, is an area of wooded former common land on the North Downs, immediately northwest of Dorking in the English county of Surrey. Its civil parish is Wotton, a geographically large village with a small population west of Dorking. Ranmore Common is within the Surrey Hills Area of Outstanding Natural Beauty, and part of it is Ranmore Common SSSI, a Site of Special Scientific Interest.