Geoff Muldaur is an American active singer, guitarist and composer, who was a founding member of the Jim Kweskin Jug Band and a member of Paul Butterfield's Better Days.

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.