Thi is a distinctive girls' name in United States, ranking #11127 in 2011 with 10 recorded births. This places Thi in the bottom 43% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 16 births ranking #8063. In 2011, approximately 1 in every 175,880 girls born was named Thi. RISING Recent data shows the name is currently rising.