Lactifluus aurantioruber is a species of mushroom in the family Russulaceae.

It originally described by McNabb as Lactifluus clarkeae var.

aurantioruber in 1971, named for its reddish-orange colour.

Jerry A. Cooper raised this variety to species-rank in 2021, thus acquiring the name Lactifluus aurantioruber.

The type locality is Tongariro National Park, New Zealand.