Dave Pegg is an English multi-instrumentalist and record producer, primarily a bass guitarist. He is the longest-serving member of the British folk rock band Fairport Convention and has been bassist with a number of folk and rock groups including the Ian Campbell Folk Group and Jethro Tull.

Fairport Convention are an English folk rock band, formed in 1967 by guitarists Richard Thompson and Simon Nicol, bassist Ashley Hutchings and drummer Shaun Frater. They started out influenced by American folk rock, with a set list dominated by Bob Dylan and Joni Mitchell songs and a sound that earned them the nickname "the British Jefferson Airplane". Vocalists Judy Dyble and Iain Matthews joined them before the recording of their self-titled debut in 1968; afterwards, Dyble was replaced by Sandy Denny, with Matthews later leaving during the recording of their third album.