Karl Nissen (February 27, 1879 – May 14, 1920) was a Norwegian pianist,[1] teacher, music journalist, and conductor.

[4] He then settled down in his hometown and gave concerts that included, among others, the actress Gyda Christensen from 1908 to 1910.

He also gave a number of duo concerts together with pianists Nils Larsen and Fridtjof Backer-Grøndahl, including Mozart's double concerto for two pianos.

Among his students were David Monrad Johansen[7] and Elisabeth Munthe-Kaas Sandvik, who debuted at his concert in 1906.

In 1911 he became the conductor of the Cæcilia mixed choir, succeeded by Leif Halvorsen after his death.