Sebastyan is a distinctive boys' name in United States, ranking #7530 in 2018 with 11 recorded births. This places Sebastyan in the bottom 47% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2014 with 12 births ranking #6982. In 2018, approximately 1 in every 165,043 boys born was named Sebastyan. FALLING Recent data shows the name is currently falling.