Helge Rognlien (14 January 1920 – 15 July 2001) was a Norwegian politician for the Liberal Party.
He was born in Oslo. At the outbreak of World War II, Rognlien was a student at the University of Oslo. After the German occupation of Norway in 1940, he was a member of the new governing body of the Norwegian Students' Society, which included students from all political groups, except the National Socialists. Rognlien represented the Liberal Student Association. A troubled relationship with the Nazi regime ensued until 15 October 1943, when 63 prominent students were arrested, and Rognlien was one of them. After a time in Bredtveit and Berg concentration camps until 8 December 1943, he spent the rest of the war years in captivity in Sennheim in Alsace and Buchenwald concentration camp in Germany.
Having graduated as cand.jur. in 1945, his career began with a one-year tenure as civil servant in the Ministry of Justice and the Police. From 1946 to 1948 he was the leader of the Young Liberals of Norway, the youth wing of the Liberal Party.