Kristian Ottosen (15 January 1921, Solund – 1 June 2006, Oslo) was a Norwegian non-fiction writer and public servant. While still a student, he was also active in the Norwegian resistance movement during World War II and was imprisoned as a Nacht und Nebel inmate. He was imprisoned in from June to July 1942, then in Bergen from July to September, then in Grini concentration camp from September to December. From December 1942 to June 1944 he was in Sachsenhausen concentration camp, then until September 1944 in Natzweiler-Struthof. He was then in Dachau concentration camp for three days, and Ottobrunn for one day. He was lastly in Dautmergen from September to November 1944 and Vaihingen until the war's end.