Kerstin is a female German and Swedish given name; it is the Scandinavian version of Christina.
Notable persons with this name include:
Kerstin Alm (born 1949), Finnish politician from the Åland Islands
Kerstin Anderson (born 1994), Most noted for portraying Maria von Trapp in the 2015 US National Tour of the The Sound of Music
Kerstin Andreae (born 1968), German politician (Alliance '90/The Greens)
Kjerstin Dellert (born 1925), Swedish soprano opera singer
Kerstin Ekman (born 1933), Swedish novelist
Kerstin Granlund, created the Swedish comedy groups Galenskaparna och After Shave
Kerstin Müller (born 1969), German rower
Kerstin Thorvall (born 1925), Swedish writer