Harald Lassen (born 13 March 1987 in Kristiansand, Norway) is a Norwegian jazz musician, composer and band leader. Besides leading his own band LASSEN, he has also been a part of bands such as Pixel, Mopti (feat. Bendik Baksaas on the album Bits & Pieces), No. 4, Dr. Kay And His Interstellar Tone Scientists and DUPLEX. He was picked up at an early age by legendary musicians such as bass player Arild Andersen and drummer Jon Christensen. In recent years he has played with musicians such as Bugge Wesseltoft, Morten Qvenild, Emilie Stoesen Christensen, Tord Gustavsen, Bram De Looze, Corrie Dick, Arthur Kay, Ellen Andrea Wang, Anja Lauvdal, Rob Waring, Mathias Eick, Ray Phiri, Mohamed Issa Matona and LABtrio.