Sidsel Dalen (born 27 November 1969) is a Norwegian journalist and crime fiction writer.

Dalen made her literary debut in 2011 with Dødelige dråper, a thriller novel set in Rio in Brazil, where the protagonist "Mia Mikkelsen" is a journalist who meets corruption, environmental crimes and abuse of power in the oil industry.

[1][2][3] Dalen graduated in anthropology and mass communication from the Goldsmiths, University of London.

She has worked as freelance journalist for radio, television and printed media.

She has won prizes for Web television for Hjemmet Mortensen (in 2007), and for news reports for TVNorge (in 2008).