Allium anceps, known by the common names twinleaf onion and Kellogg's onion, is a species of wild onion. It is native to the western United States, where it is widespread in Nevada, its range extending into adjacent parts of California, Idaho, and Oregon. It grows in barren clay and rocky soils. The bulbs are edible and were a food source for the Paiute people, who roasted them and pressed them into cakes.