Barton Mills Valley is a 10.7 hectare Local Nature Reserve in Mildenhall in Suffolk.

It is owned and managed by West Suffolk Council.

[1][2] The site is in Breckland Forest biological Site of Special Scientific Interest.

[3] This diverse site has reedbeds, alder carr, willow carr and sedge areas.

There are picnic benches, a car park and disabled access.