Alternative country is a loosely defined subgenre of country music and/or country rock that includes acts that differ significantly in style from mainstream country music, mainstream country rock, and country pop. Alternative country artists are often influenced by alternative rock. Most frequently, the term has been used to describe certain country music and country rock bands and artists that are also defined as or have incorporated influences from alternative rock, indie rock, punk rock, heartland rock, Southern rock, progressive country, outlaw country, neotraditional country, Texas country, Red Dirt, roots rock, indie folk, folk rock, rockabilly, bluegrass, and honky tonk.

Country rock is a music genre that fuses rock and country. It was developed by rock musicians who began to record country-flavored records in the late 1960s and early 1970s. These musicians recorded rock records using country themes, vocal styles, and additional instrumentation, most characteristically pedal steel guitars. Country rock began with artists like Buffalo Springfield, Michael Nesmith, Bob Dylan, Nitty Gritty Dirt Band, the Byrds, the Flying Burrito Brothers, The International Submarine Band and others, reaching its greatest popularity in the 1970s with artists such as Emmylou Harris, the Eagles, New Riders of the Purple Sage, Linda Ronstadt, Little Feat, Poco, Charlie Daniels Band, and Pure Prairie League. Country rock also influenced artists in other genres, including The Band, the Grateful Dead, Creedence Clearwater Revival, The Rolling Stones, and George Harrison's solo work, as well as playing a part in the development of Southern rock.