Atwater-Donnelly is an American folk music group from Rhode Island consisting of Aubrey Atwater, Elwood Donnelly, and occasionally other musicians and dancers. They have toured throughout the United States and internationally, playing guitar, banjo, Appalachian dulcimer, tin whistle, limberjack, and other instruments. In recent years, they have also performed as The Atwater-Donnelly Trio, with Cathy Clasper-Torch.

The Appalachian dulcimer is a fretted string instrument of the zither family, typically with three or four strings, originally played in the Appalachian region of the United States. The body extends the length of the fingerboard, and its fretting is generally diatonic.