Quick answer
Tiana is a girl name.
Meaning and history
Short form of Tatiana or Christiana. It was rare in the United States until it jumped in popularity in 1975, perhaps due to the Vietnamese-American actress Tiana Alexandra (1956-), who had some exposure at that time. It was used as the name of the princess in the Disney movie The Princess and the Frog (2009).
Notes and context
Usage: english