Whortleberry may refer to the berries of several plants of genus Vaccinium:
Vaccinium myrtillus, European bilberry or blue whortleberry Vaccinium vitis-idaea, lingonberry or red whortleberry Vaccinium uliginosum, bog whortleberry or bilberry Vaccinium scoparium, grouse whortleberry, grouseberry, little leaf huckleberry
See also Bilberry