Kristiann is of Scandinavian origin, derived from the Old Norse 'kristinn', which means 'a Christian'. It is a less common variant spelling of the female name Kristianna or Christina. The name gained popularity in the 20th century but remains relatively rare compared to its variants.
The name Kristiann saw a peak in popularity with 11 births each in 1969 and 1972. After the 1970s, its usage decreased gradually but remained relatively steady until the late 1980s, when it started to decline more significantly. By the early 1990s, the name's popularity had dropped considerably, with fewer than 10 births per year occurring consistently until 2004. Over the entire period from 1963 to 2004, a total of 206 babies were named Kristiann.