This was a popular name in the 20th century (especially the middle decades) in French, German, and English-speaking countries. In the United States Christina has been more common since 1973, though both forms are currently floundering on the charts.
This is a Modern Greek name as well. It has been conflated with the name Χρήστος (see Christos 2), which is spelled differently but pronounced identically in Modern Greek.
As an American given name, it got a boost in popularity in 2012 after the rapper Kendrick Lamar (1987-) released his debut album.