Dag Østerberg (9 November 1938 – 22 February 2017) was a Norwegian sociologist, philosopher and musicologist.
[1] He was born in Trondheim to police officer Erling Østerberg and Jørgine Sofie Kleven.
He was a central contributor to the so-called positivism debate in the 1960s and 1970s.
Among his works are Metasosiologisk Essay from 1963, Makt og materiell from 1971, and a biography of Jean-Paul Sartre from 1993.
Et filosofisk bidrag (Forms of Understanding: A Philosophical Contribution) was selected for the Norwegian Sociology Canon in 2009–2011.