Jack Fridtjof Charles H√ľcke Coucheron Nobel Nielsen (Norwegian pronunciation:¬†[t É…ík nil.s…õn(ňź)]) (3 August 1896 ‚Äď 9 January 1981) was a Norwegiantennis player. He was a six-time national tennis champion of Norway.
He was born in Egersund to Peter Godtfried Albert Nielsen, a customs chief officer, and Karen Andrea Coucheron Aamodt. He married Anne-Sofie Troye, daughter of a school principal in Trondheim. He was the father of skier Jack Nielsen.
Nielsen graduated as a chemical engineer from the Dresden University of Technology in 1917. In 1921 he earned his doctorate in the Karlsruhe Institute of Technology on Hydrogenation. In 1924 he worked as a brewmaster in Copenhagen. In 1918-19 he became chemist in the Aktieselskab Northern Chromate Industrial. In 1922-31 he was employed by the Christiania Aktie √ėlbryggeri Oslo's main beer brewery, where he was promoted the head distiller. Between 1932-46 he switched to Nora Industrier also in Oslo, then in 1946 he moved to the Trondheim subsidiary where he lived and worked as the administrative director to 1962 and managing director to 1965. He finished his last year of his civil career at the E. C. Dahls Brewery from where he retired in 1966. Apart from being the president of several regional and national brewer labor unions and mineral water distributors, he was also the president of the Norwegian Tennis Federation and the Oslo Tennis Club for several years. He also filled in for the governor seat of the Rotary International between 1963-1964.