Bjørn Marius Hegge (born 11 September 1987 in Elvran, Stjørdal Municipality) is a Norwegian jazz musician (upright bass and guitar) and composer.

Hegge completed his studies on the Jazz program at Norwegian University of Science and Technology in Trondheim, giving the exam concert with drummer Hans Hulbækmo and pianist Oscar Grönberg in 2016.

While still a student he led his band Operasjon Hegge joined by former fellow students Martin Myhre Olsen, Petter Kraft, Simon Olderskog Albertsen, and Torstein Lavik Larsen, releasing his debut album Midt På Natta (2016) on the label Particular Recordings.

He also collaborated in the Kjetil Mulelid Trio, including with drummer Andreas Skår Winther, releasing the album Not Nearly Enough To Buy A House (2017), What You Thought Was Home (2019) and Who Do You Love The Most (2022) on the label Rune Grammofon.

[2] They released the albumet Vi Är Ledsna Men Du Får Inte Längre Vara Barn in 2017 and was awarded the Spellemannprisen in the jazz category.