Thania is a distinctive girls' name in United States, ranking #17045 in 2025 with 5 recorded births. This places Thania in the bottom 1% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2001 with 77 births ranking #2149. Since 1996, the popularity has decreased by 90.0%. In 2025, approximately 1 in every 321,453 girls born was named Thania. FALLING Recent data shows the name is currently falling.