Magnús Eiríksson (22 June 1806 in Skinnalón (Norður-Þingeyjarsýsla), Iceland – 3 July 1881 in Copenhagen, Denmark) was an Icelandic theologian and a contemporary critic of Søren Aabye Kierkegaard (1813–1855) and Hans Lassen Martensen (1808–1884) in Copenhagen.