Magnús Eiríksson (born 22 June, 1806 in Skinnalón, Iceland; died 3 July, 1881 in Copenhagen, Denmark) was an Icelandic theologian. He lived in Copenhagen at the same time as Søren Kierkegaard (1813-1855) and Hans Lassen Martensen (1808-1884) and viewed their opinions on religion and Christianity with a critical eye.