Cortinarius nettieae is a species of mushroom in the family Cortinariaceae.
The cap of Cortinarius nettieae is gray or brownish in color. It is convex and about 4-7 centimeters in diameter. The stipe is about 5-12 centimeters long and 0.5-1.5 centimeters wide. It is white to purplish. The gills start out light purplish, before becoming grayish and eventually brownish in age.
Cortinarius nettieae is found under conifers. It is typically found near the coast, where it grows under shore pine.