Sebastien is a distinctive boys' name in United States, ranking #1436 in 2012 with 116 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 81.3%. In 2012, approximately 1 in every 16,350 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.