Keirstin \ke(i)-rs-tin, keir-stin\ as a girl's name is a variant of Kirsten (Scandinavian, Latin), and the meaning of Keirstin is "follower of Christ".

The baby name Keirstin sounds like Kirstin, Kerstin and Keerstin. Other similar baby names are Kristin, Kirstie, Kyrstin, Kjerstin, Kirstyn, Kirstine, Kirsti, Kierstin and Kersten.