Sebastien is a distinctive boys' name in United States, ranking #1744 in 2021 with 93 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 45.3%. In 2021, approximately 1 in every 18,798 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.