Ottar Dahl (5 January 1924 – 4 April 2011) was a Norwegian historian and historiographer. Dahl was born in Nannestad. He took the dr. philos. degree in 1957, worked at the University of Oslo as a scholarship holder from 1957, docent from 1960 and professor from 1966 to 1991. He then retired to a position as professor emeritus. Dahl was a member of the Norwegian Academy of Science and Letters. From 1972 to 1975 he chaired the Norwegian Historical Association. He died in April 2011. Selected bibliography Historisk materialisme. Historiesynet hos Koht og Bull, 1952 Om årsaksproblemer i historisk forskning, 1957 Norsk historieforskning i det 19. og 20. århundre, 1959 Grunntrekk i historieforskningens metodelære, 1967 Problemer i historiens teori, 1986 Fra konsens til katastrofe - kapitler av fascismens historie i Italia, 1996 References 1924 births 2011 deaths People from Nannestad 20th-century Norwegian historians Academic staff of the University of Oslo Members of the Norwegian Academy of Science and Letters