Sebastien is a distinctive boys' name in United States, ranking #1058 in 2007 with 178 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 178.1%. In 2007, approximately 1 in every 11,659 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.