At 255 metres (837 ft), Sidown Hill is the third highest hill in the county of Hampshire, England.

At the summit is a mid-18th century Grade II listed building known as Heaven's Gate which is hidden by the trees covering the top of the hill.

[3] To the east is Beacon Hill (261 metres (856 ft)).

On 5 May 1945 a USAAF B-17 Flying Fortress of 326th Bombardment Squadron crashed on Sidown Hill with the loss of six of its crew of seven.

This Hampshire location article is a stub.