Agnes Magnúsdóttir (27 October 1795 – 12 January 1830) was the last person to be executed in Iceland, along with Friðrik Sigurðsson. The pair were sentenced to death for the murder of Nathan Ketilsson, a farmer in Illugastaðir in Vatnsnes, and Pétur Jónsson from Geitaskarð on 14 March 1828. They were executed by beheading in Vatnsdalshólar in Austur-Húnavatnssýsla on 12 January 1830.
