Jim Kweskin is an American folk, jazz, and blues musician, most notable as the founder of the Jim Kweskin jug band, also known as Jim Kweskin and the Jug Band, with Fritz Richmond, Geoff Muldaur, Bob Siggins and Bruno Wolfe. The Jug Band was a significant part of the folk and blues revival of the 1960s. Maria Muldaur, formerly with the Even Dozen Jug Band, joined the band in 1963. During the five years they were together, the Jug Band successfully modernized the sounds of pre–World War II rural music.

A jug band is a band employing a jug player and a mix of conventional and homemade instruments. These homemade instruments are ordinary objects adapted to or modified for making sound, like the washtub bass, washboard, spoons, bones, stovepipe, jew's harp, and comb and tissue paper. The term jug band is loosely used in referring to ensembles that also incorporate homemade instruments but that are more accurately called skiffle bands, spasm bands, or juke bands because they do not include a jug player.