Bidu Bidu Forest Reserve is in the Beluran district in Sandakan Division, Sabah, Malaysia.

It was designated as a class I protection forest by the Sabah Forestry Department in 1984.

The forest reserve is hilly with very steep slopes.

The forest reserve is a very important area for the conservation of ultramafic forest in Sabah and harbours many interesting plants, including the Sabah endemic Borneodendron aenigmaticum.

[1] This Sabah location article is a stub.