Kristofer Andreas Lange Sinding-Larsen (3 April 1873 – 26 December 1948) was a Norwegian painter.

He was born in Kristiania as a son of jurist and writer Alfred Sinding-Larsen (1839–1911) and Elisabeth Lange (1841–1887).

He was a brother of physician Christian Magnus Sinding-Larsen, architect Holger Sinding-Larsen and officer Birger Fredrik Sinding-Larsen,[1] and also a grandnephew of mining engineer Matthias Wilhelm Sinding, second cousin of painter Sigmund Sinding,[2] maternal great-grandson of founding father Christian Magnus Falsen and nephew of Balthazar Lange.

[3] In December 1903 in Helsingør he married Danish citizen Margrethe Volkersen (1880–1951).

He then stayed in Italy for three years, and painted his main pieces Appelsintreet and Magna in 1898.