The name Juana is a girl's name of Spanish origin. Juana and is often added to lists like International Variations of Jane and discussed in our forums with posts like "Build a sibling set together!".
From the experts:
Juana has not achieved the popularity in the U.S. of the male version Juan. Whereas Juan has made it almost to the Top 50 on the U. S. hit parade, sister Juana has barely entered the thousand most popular.