Sebastien is a distinctive boys' name in United States, ranking #2473 in 2025 with 55 recorded births. This places Sebastien in the top 18% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has decreased by 14.1%. In 2025, approximately 1 in every 31,056 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.