Kirstin \k(i)-rs-tin, kir-stin\ as a girl's name is a variant of Christina (Latin), Christine (French, Latin) and Kirsten (Scandinavian, Latin), and the meaning of Kirstin is "follower of Christ". See also Kirsi.

The baby name Kirstin sounds like Kirstie, Kyrstin, Kirstyn, Kirstine, Kirsti, Kierstin, Kerstin and Keirstin. Other similar baby names are Karsten, Kristin, Kirsty, Khristin, Kjerstin, Kirstynn, Kirsteen, Kiersten, Kersten, Keerstin, Kirstee and Krystin.