Thien is a distinctive boys' name in United States, ranking #4416 in 2009 with 23 recorded births. The name reached its all-time peak in 1996 with 42 births ranking #2072. Since 1996, the popularity has decreased by 45.2%. In 2009, approximately 1 in every 86,231 boys born was named Thien. FALLING Recent data shows the name is currently falling.