Coombe Hill is a hill in The Chilterns, located next to the hamlet of Dunsmore, Buckinghamshire, England, near the small town of Wendover, and overlooking Aylesbury Vale. It is not to be confused with another Coombe Hill on the flank of Haddington Hill, some two miles to the north-east. It is part of the Bacombe and Coombe Hills Site of Special Scientific Interest.
The majority of the hill (an area of 106acre) once formed part of the Chequers Estate but was presented to the National Trust by the United Kingdom government when they were given the Estate in the 1920s. The summit of the hill is 852 feet / 259.7 m above sea level.