Oak Hill Wood is a Local Nature Reserve, Borough Grade I, in East Barnet, London. It is owned by the London Borough of Barnet and managed by the London Wildlife Trust. It is an ancient woodland, dominated by pedunculate oak, hornbeam and ash. A shrub layer includes hawthorns, field maples and wild service trees, and among the ground flora are bluebells and wood anenomes. Breeding birds include tawny owls, nuthatches, tree creepers and stock doves. A small stream flows through The Wood to join Pymme's Brook, which is also a Local Nature Reserve, in the neighbouring Oak Hill Park.
There is also an area of meadow which contains common wild flowers such as lady's bedstraw and common knapweed. It has common butterflies such as gatekeeper, common blue and large blue. There is access from Mansfield Avenue, Daneland and Brookside, as well as from Oak Hill Park.