Sebastien is a distinctive boys' name in United States, ranking #1296 in 2010 with 133 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 107.8%. In 2010, approximately 1 in every 14,424 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.