Adelsten Gudvan Sivertsen (7 May 1925 – 13 May 2010) was a Norwegian businessperson.
He took the cand.jur.
degree at the university in 1951, before working as tax director in Sør-Vågsøy and deputy judge in Gjerpen.
From 1952 to 1959 he worked as a secretary in the Norwegian Employers' Confederation.
From 1959 to 1973 he was a secretary and director of G.C.
Rieber & Co, and from 1974 to 1990 he was the CEO of Storli.Sivertsen chaired the Bergen branch of the Norwegian Shipowners' Association from 1987 to 1988.
He was a board member of the bank IS-Banken from 1989 to 1995, and of Hardanger Sunnhordlandske Dampskipsselskap.He lived in Bergen before retirement, but did in the end reside in Sandvika.