Satyrium acadica, the Acadian hairstreak, is a butterfly of the family Lycaenidae.

It is found in North America from British Columbia east to Nova Scotia and south to Idaho, Colorado, the northern Midwest, Maryland, and New Jersey.

Like other hairstreaks, each hindwing has two tails near the tip.

Adults are on wing from June to August in one generation per year.

[4] The larvae feed on the leaves of Salix species, including S. nigra and S. sericea.