Crofton Wood or Crofton Woods is a Site of Special Scientific Interest^[1] and Site of Metropolitan Importance for Nature Conservation^[2] in Crofton in the London Borough of Bromley. Kyd Brook goes through the Wood.

It is a large area of ancient woodland on London Clay, which supports many types of trees, shrubs and herbs.^[3] Trees in the ancient wood are mainly oak and hazel, with a central area of former fields. It has high botanical diversity, including fourteen species of sedge, and a rich invertebrate fauna.^[2]

The London Loop goes through the Wood, and there is access from a range of different points round the woodland.

• List of Sites of Special Scientific Interest in Greater London