Meaning and name origin
Kierstynn \ki(e)-rsty-nn, kier(s)-tynn\ as a girl's name is of Scandinavian and Latin origin, and the meaning of Kierstynn is "follower of Christ". Kierstynn is a variant of Kirsten (Scandinavian, Latin): variant of Christine. Not generally used as a name for girls.
Kierstynn is not a popular first name for females and an equally uncommon surname or last name for all people (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the girl name Kierstynn and its variant forms. Popular variation forms ranked in the Top 1000/100 are Kirstin, Kirsten and Kiersten. (Source: 2014 Birth Name Statistics).