Kristiina is an Estonian and Finnish feminine given name. It is a cognate of the English and French given name Christine. Tiina is often used as a diminutive of Kristiina. People named Kristiina include: Kristiina Brask (born 1990), Finnish pop singer. Kristiina Ehin (born 1977), Estonian singer, poet and translator. Kristiina Elstelä (1943–2016), Finnish actress. Kristiina Halttu (born 1963), Finnish actress. Kristiina Kass (born 1970), Estonian children's writer and illustrator. Kristiina Kolehmainen (1956–2012), Finnish-Swedish librarian and translator.
https://en.wikipedia.org/wiki/Kristiina