Thu is a distinctive girls' name in United States, ranking #7204 in 1999 with 14 recorded births. The name reached its all-time peak in 2003 with 18 births ranking #6561. Since 1996, the popularity has decreased by 17.6%. In 1999, approximately 1 in every 126,699 girls born was named Thu. RISING Recent data shows the name is currently rising.