Alexander Lange Kielland (Norwegian: [?l?'ks?nd?r 'l???? 'ç?l??n]; 18 February 1849 – 6 April 1906) was one of the most famous Norwegian realistic writers of the 19th century.
He is one of the so-called "The Four Greats" of Norwegian literature, along with Henrik Ibsen, Bjørnstjerne Bjørnson and Jonas Lie.