Thanh is a distinctive boys' name in United States, ranking #5021 in 2003 with 16 recorded births. The name reached its all-time peak in 1999 with 28 births ranking #3024. Since 1996, the popularity has decreased by 40.7%. In 2003, approximately 1 in every 123,454 boys born was named Thanh. FALLING Recent data shows the name is currently falling.