Sir Karl William Pamp Jenkins, , HonFLSW (born 17 February 1944) is a Welsh multi-instrumentalist and composer. His best known works include the song "Adiemus" (1995, from the Adiemus album series), Palladio (1995), The Armed Man (2000), his Requiem (2005) and his Stabat Mater (2008).

Jenkins was educated in music at Cardiff University and the Royal Academy of Music, and he is a fellow and an associate of the latter. He joined the jazz-rock band Soft Machine in 1972 and became the group's lead songwriter in 1974. He continued to work with Soft Machine until 1984, but has not been involved with any incarnation of the group since. He has composed music for advertising campaigns and has won the industry prize twice.