Callophrys polios, the hoary elfin, is a butterfly of the family Lycaenidae.

[2] It is listed as a species of special concern and believed extirpated in the US state of Connecticut.

Adults are on wing from April to June in one generation.

The larvae feed on Arctostaphylos uva-ursi and possibly Epigaea repens.

The adults feed on flower nectar from various species, including leatherleaf, pyxie, wild strawberry and willow.