Seb is a distinctive boys' name in England & Wales, ranking #1124 in 2025 with 26 recorded births. This places Seb in the top 18% of ranked UK boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2018 with 58 births ranking #619. In 2025, approximately 1 in every 10,459 boys born was named Seb. FALLING Recent data shows the name is currently falling.