Harald Sigurdssøn Astrup (29 May 1903 – 22 June 1983) was a Norwegian businessperson.
He was born in Kristiania as a son of politician Sigurd Astrup (1873–1949) and Ingeborg Willumsen (1877–1962).
[2] In 1928 he married Mabel Anette Plathe Butenschøn, a sister of Barthold A. Butenschøn and daughter of Barthold A. Butenschøn Sr.[1] He finished his secondary education in 1922, and was a travelling businessman in Norway and abroad until being hired in the family company Astrup & Søn in 1926.
He advanced to office manager in 1931, partner in 1936 and sole owner in 1949; he also served as chairman.
He was a board member of the insurance companies Storebrand, Idun, Christiania Søforsikringsselskab and Poseidon, and was a supervisory council member of Den norske Creditbank, Dyno Industrier, Norcem, the Norwegian America Line and Bjølvefossen.