Flindersia xanthoxyla is an Australian rainforest tree in the citrus family. It is known as the Long Jack or Yellowwood. It occurs mainly in dry rainforest or littoral rainforest. However, it also occurs in sub tropical rainforest such as Davis Scrub Nature Reserve. The species name xanthoxyla means "yellow wood". The natural range of distribution is from the Richmond River, New South Wales to Gympie in south eastern Queensland.