Christina Björnsdotter of Denmark (Danish: Kirstine Björnsdatter, Swedish: Kristina Björnsdotter; c. 1120/25 – c. 1160/70), was a Swedish queen consort in the 12th century, married to King Eric IX of Sweden and mother of King Canute I of Sweden.

According to the Knýtlinga saga, Christina was the daughter of Björn Haraldsen Ironside, son of the Danish prince Harald Kesja, and his consort, the Swedish princess Katarina Ingesdotter, daughter of King Inge I of Sweden. It has been calculated that she was born no earlier than c. 1122, which fits with the approximate birthdate of her future husband Eric (c. 1120-25). She was made fatherless in 1134, when her father Prince Björn was murdered by order of his uncle, King Eric II of Denmark. Her sole surviving close relative, Björn's brother Oluf Haraldsen, sought assistance in Sweden and was able to set himself up as king in Skåne in 1140-1143.

In about the same time Christina married in Sweden with a man of non-royal origins, Eric Jedvardsson, later known as Eric the Saint. He probably came from the province of Västergötland which bordered to Denmark. Since their son Canute was betrothed by 1160, the marriage of Christina and Eric probably took place in the early 1140s. The marriage gave Eric the means to claim the Swedish throne; the House of Stenkil, to which Christina belonged on her mother's side, became extinct in the male line in the 1120s. The new king Sverker I did not have royal forbears. According to later tradition, Eric took royal titles in 1150. Six years later, he became king after the assassination of Sverker, and Christina became the Queen of Sweden. Her queenship probably lasted for four years, from 1156 to 1160.

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