Yoesden, often known as Yoesden Bank is a 13 hectare nature reserve in Bledlow Ridge in Buckinghamshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. It is in the Chilterns Area of Outstanding Natural Beauty.The site has areas of woodland and grassland. The steeply sloping chalk meadow has many species of butterfly, including three scarce blue species, the Adonis, chalkhill and small blue.