Kajsa (Catarina) (1792, Agunnaryd - 1857), known as Halta-Kajsa (Limp-Kajsa), was a Swedish story teller and tradition bearer.
She was an important co-worker and source of information of Gunnar Olof Hyltén-Cavallius in his work of collecting old Swedish fairy tales and folk songs.
She was born in the country parish of Agunnaryd in Småland as the illegitimate daughter of the farmhand Ingjerd Svensdotter by an unknown father, although the farmer Anders Persson was unofficially pointed out as her father, and grew up with her mother and maternal grandparents in a cottage reserved for the parish destitute.
Gunnar Olof Hyltén-Cavallius met her in 1845, and found her to have an immense knowledge about old legends, folk songs, fairy tales and stories, and she was one of his most important assistants and sources in his work in collecting and documenting them.
To enable him to move with him to Stockholm as his assistant consultant, he employed her in 1848, officially however as a nurse maid for his daughter.