Holly Happy Days is the 12th studio album and first holiday album by Indigo Girls, released on October 12, 2010 by Vanguard Records. It is their third album on the IGR/Vanguard imprint.
The album contains nine standards and three originals. Their arrangements are mostly acoustic, with bluegrass music influence. The Indigo Girls chose songs from several holiday traditions, such as Woody Guthrie's Hanukkah track "Happy Joyous Hanukkah," and traditional Christmas hymns like "Angels We Have Heard on High"—arranged for guitar and mandolin in what the group called a Baroque-inspired style. Other tracks, like "Your Holiday Song," were written to include all faiths.