Peter Stampfel (born October 29, 1938, in Wauwatosa, Wisconsin[5]) is an American fiddle player, old-time musician, and singer-songwriter.

Stampfel is best known as a member of the Holy Modal Rounders, a psychedelic folk band that he founded with Steve Weber in the early 1960s.

[6] He was also briefly a member of the Fugs and has been the leader of several musical projects, including the Bottlecaps, the Du-Tels, and the WORM All-Stars.

He has performed with They Might Be Giants, the Roches, Richard Barone, Yo La Tengo, Bongwater, Jeffrey Lewis, Michael Hurley, Baby Gramps and Loudon Wainwright III.

[7] Music Critic Robert Christgau has asserted that “next to Bob Dylan, Stampfel is the closest thing to a genius" to come out of the New York folk revival scene of the 1960's.