Boreohesperus is a genus of paradoxosomatid millipedes containing six species native to Western Australia.

The name refers to the northwestern distribution in Australia, deriving from Boreas, Greek god of the North, and hesperus, Latin for "west".

The six species are distinguished primarily by differences in gonopod structure, and to a lesser extent, body size.

B. undulatus and B. delicatus co-occur in an area of Pilbara, the only two sympatric species of the genus.

The sixth species, B. dubitalis, occurs only on Barrow Island, where it is widespread and abundant.