Galley and Warden Hills is a 47 hectare biological Site of Special Scientific Interest in Warden Hill, a suburb of Luton in Bedfordshire.

The local planning authority is Central Bedfordshire Council, and it was notified in 1986 under Section 28 of the Wildlife and Countryside Act 1981.

[3][4] The site is chalk grassland with areas of dense scrub, and it has many plants which are rare nationally and locally.

[1] It has a wide variety of wild flowers and more than twenty species of butterflies.

[3] The Icknield Way Path passes through the hills on its 110-mile course from Ivinghoe Beacon in Buckinghamshire to Knettishall Heath in Suffolk.