Sebastien is a distinctive boys' name in United States, ranking #1464 in 1997 with 74 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 15.6%. In 1997, approximately 1 in every 25,474 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.