Sebastien is a distinctive boys' name in United States, ranking #1574 in 2018 with 107 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 67.2%. In 2018, approximately 1 in every 16,967 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.