Jan Erik Kongshaug (born 4 July 1944 in Trondheim, Norway) is a Norwegian jazz musician (guitar), sound engineering and composer, the son of guitarist John Kongshaug.
Kongshaug started playing the accordion (1950), guitar (1958) and bass (1964). Kongshaug got his examen artium in 1963, and took education in the electronics by the Trondheim Technical School in 1967. Then he worked for Arne Bendiksen Studio (1967-1974) and Talent Studio (1974–79) in Oslo, and did some jobs in New York. In 1984, he founded his own recording studio, Rainbow Studio in Oslo and has evolved to be one of the grand masters of Sound engineering. Altogether he has produced over 4,000 records, and is particularly known for his recordings of some 700 recordings for ECM Records since 1970.
Kongshaug played with Åse Kleveland winning the Norsk Melodi Grand Prix in 1966, and was third in the Eurovision Song Contest (1966). He has also played on dozens of recordings, including with Asmund Bjørken, Frode Thingnæs, Sven Nyhus, Arild Andersen and Frode Alnæs.