Thy is a distinctive girls' name in United States, ranking #18876 in 2015 with 5 recorded births. The name reached its all-time peak in 2002 with 17 births ranking #6673. Since 1996, the popularity has decreased by 28.6%. In 2015, approximately 1 in every 356,931 girls born was named Thy. STABLE Recent data shows the name is currently stable.