Sebastien is a distinctive boys' name in United States, ranking #1165 in 2013 with 155 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 142.2%. In 2013, approximately 1 in every 12,202 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.