Seiya is a distinctive boys' name in United States, ranking #8134 in 2025 with 10 recorded births. The name reached its all-time peak in 2005 with 10 births ranking #7552. Since 1996, the popularity has increased by 66.7%. In 2025, approximately 1 in every 170,808 boys born was named Seiya. RISING Recent data shows the name is currently rising.