Herbert Jansch was a Scottish folk musician and founding member of the band Pentangle. He was born in Glasgow and came to prominence in London in the 1960s as an acoustic guitarist and singer-songwriter. He recorded more than 28 albums and toured extensively from the 1960s to the 21st century.

Pentangle are a British folk band, formed in London in 1967. The original band was active in the late 1960s and early 1970s, and a later version has been active since the early 1980s. The original line-up, which was unchanged throughout the band's first incarnation (1967–1973), was Jacqui McShee (vocals); John Renbourn ; Bert Jansch ; Danny Thompson ; and Terry Cox (drums).