Pleurotus populinus, the aspen oyster mushroom, is a gilled fungus native to North America.

[3] This original naming was invalid according to several sections of the International Code of Botanical Nomenclature,[4] so it was republished in 1997.

They are 3–10 mm broad, white to cream in color, and have two sets of intervening lamellulae (short gills).

[6] Pleurotus populinus fruit bodies grow singly to numerous—often arranged in overlapping clusters—on the rotting stumps, logs, and limbs of hardwoods.

It is found in the northern United States and Canada, and in mountainous regions of western North America.