Jonathan Hugh Quarmby (born 20 December 1961 in Huddersfield), is an English record producer and songwriter and son of English architect Arthur Quarmby.
Studying architecture at Sheffield University, he soon became a part of the city's vibrant music scene, initially as a keyboard player, performing on Yazz's album Wanted and touring with local band, Floy Joy. His transition to record production came with Barclay artists Fred de Fred. Jonathan then collaborated with Axis Studio-based Comsat Angels bass player Kevin Bacon to write and produce Ephraim Lewis's album Skin for Elektra Records.
This partnership (Bacon and Quarmby) went on to produce and write a diverse range of music: electro as R&S artists Manna, Britpop with The Longpigs, rock with Mew, pop with The Sugababes, classical crossover with David Garrett, UK hip hop with Plan B, and were most publicly lauded for their contribution to reggae, with Brit Award-winning Finley Quaye (Maverick a Strike) and Grammy Award-winning Ziggy Marley (Fallen Is Babylon).