Thien is a distinctive boys' name in United States, ranking #4964 in 2011 with 19 recorded births. The name reached its all-time peak in 1996 with 42 births ranking #2072. Since 1996, the popularity has decreased by 54.8%. In 2011, approximately 1 in every 99,947 boys born was named Thien. FALLING Recent data shows the name is currently falling.