Georg Eugen Nielsen (1884 – 11 July 1963) was a Norwegian architect, publisher and activist. He was an architect by profession, but was wealthy and had time to pursue an interest in writing and publishing. He published the biweekly newspaper Fronten from 1932. Fronten was an organ for the short-lived National Socialist Workers' Party of Norway, and Nielsen was skeptical to Nasjonal Samling. His main interest was exposing what he perceived as the evils of Freemasonry.