Sebastien is a distinctive boys' name in England & Wales, ranking #589 in 2013 with 60 recorded births. The name reached its all-time peak in 2014 with 70 births ranking #534. Since 1996, the popularity has increased by 275.0%. In 2013, approximately 1 in every 5,560 boys born was named Sebastien. STABLE Recent data shows the name is currently stable.