Pentangle is a British folk rock (or folk-jazz) band. The original band was active in the late 1960s and early 1970s; its successor 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, guitar; Bert Jansch, guitar; Danny Thompson, double bass; and Terry Cox, drums.

The name Pentangle was chosen to represent the five members of the band, but the pentagram symbol also has a number of mystical associations and is the device on Sir Gawain's shield in the Middle English poem Sir Gawain and the Green Knight which held a fascination for Renbourn.

In 2007, the original members of the band were reunited to receive a Lifetime Achievement award at in the BBC Radio 2 Folk Awards and to record a short concert that was broadcast on BBC radio. In January 2008, a twelve date UK tour featuring all five original members was announced.

The Pentangle, along with Fairport Convention , were one of the shining lights in the modernisation of British folk music in the 1960s. Rather than adding elements of rock music, however, they leaned toward jazz , supplementing twin acoustic guitars with jazzy drums and acoustic bass. The band consisted of two of the superstars of British folk guitar, Bert Jansch and John Renbourn (both of whom also sang,) singer Jacqui McShee , bassist Danny Thompson and drummer Terry Cox . The original line-up