Bjørn Haraldsen Ironside

Bjørn Haraldsen Ironside (Bjørn Jærnside; died 1134) was a Swedish King.

Bjørn was one of the 15 sons of Prince Harald Kesja. His mother was Ragnild Magnusdatter. Bjørn married Princess Katarina Ingesdotter of Sweden, the daughter of King Inge I of Sweden. Bjørn was the father of Christina Bjornsdatter, a Swedish queen.

Bjørn accidentally drowned with his brother Eric in 1134 near Schleswig.