Sebastien is a distinctive boys' name in United States, ranking #1578 in 2017 with 103 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 60.9%. In 2017, approximately 1 in every 17,964 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.