Also spelled as "Katje" from what I've seen. Katja ("KAHT-ya") is also a Russian pet form of Katherine, with a somewhat different spelling. I like this name; it's a diminutive that actually retains some elegance and dignity of the original name, unlike "Cathy", "Christie" or "Candy", which are too "cutesy" and have become a little too common.
-- Anonymous User 4/28/2005
It's also used it Sweden and Finland. Pronounced like "cut ya".