Christiana or Christianna is a feminine given name.
Notable people with the name include:
Christiana Figueres (born 1956), Costa Rican diplomat Christianna Brand (1907–1988), British crime writer and children's author Christiana Cavendish (1595–1675), Scottish landowner and royalist Christiana Mariana von Ziegler (1695–1760), German poet and writer Christiana of Schleswig-Holstein-Sonderburg-Glücksburg (1634–1701), often referred to as Christiane Christiana Oxenstierna (1661–1701), Swedish noble
In fiction: Christiana, wife of Christian in The Pilgrim's Progress