Rasmus Nielsen (4 July 1809 â 30 September 1884) was a Danish philosopher and professor, as well as a critic of Søren Kierkegaard.
Nielsen was the son of a farmer. He studied theology at the University of Copenhagen, starting in 1832 and graduating in 1837. He then went on to get a licentiate degree and, after giving some lectures on theological topics, succeeded Poul Martin Møller as professor of moral theology.