Uncle Earl is an American old-time music group, formed in 2000 by KC Groves and Jo Serrapere. Currently the lineup consists of four women, all of whom share vocal duties: KC Groves, Kristin Andreassen, Abigail Washburn, and Rayna Gellert. They have released three albums and two EPs, and their fifth album Waterloo, Tennessee was produced by John Paul Jones of Led Zeppelin.

Old-time music is a genre of North American folk music. It developed along with various North American folk dances, such as square dancing, clogging, and buck dancing. It is played on acoustic instruments, generally centering on a combination of fiddle and plucked string instruments, most often the banjo, guitar, and mandolin. Together, they form an ensemble called the string band, which has historically been the most common configuration to play old-time music. The genre is considered a precursor to modern country music.