Is of Scandinavian origin. Variant of Christine (Greek) "christian". The name has been in use in Scotland since long ago. Actresses Kirstie Alley, Kirsten Dunst.
Variations of Kerstin are: Keerstin, Keirstin, Kersten, Kiersten, Kerstin, Kiersten, Kierstin, Kierstynn, Kirsteen, Kirsten, Kirsti, Kirstie, Kirstin, Kirstine, Kirsty, Kirstyn, Kirstynn, Kjerstin, Kristyn and Kyrstin.