Harald Sommerfeldt (20 October 1886 – 1966) was a Norwegian businessperson. He was born in Kristiania as a son of customs treasurer Thorolf Sommerfeldt (1849–1909) and Thrine Karine Sommerfelt (1856–1900). In 1912 he married Sigrid Grøner, a daughter of district stipendiary magistrate . He was decorated as a Knight, First Class of the Order of St. Olav, Knight of the Order of the Dannebrog, Commander of the Order of Vasa and the Order of the Lion of Finland. He died in 1966.