Kristina Nilsdotter (Blake) (died 1254), was a Swedish noblewoman. She was the daughter of princess Catherine of Sweden and the Norwegian nobleman Nils Blake. She married the Norwegian Earl Hakon the Mad in 1205, and in the 1210s Eskil Magnusson, the lawspeaker of Västergötland. She was the mother of Knut Haakonsson. Kristina and her spouse were portrayed by Snorre Sturlasson who visited them in 1219, and who reportedly gave them much valuable information for his writings.
- Lyche Arstad, Knut Peter (2001). ”Håkon Galen”. Norsk biografisk leksikon. Kunnskapsforlaget.