Seiya is a distinctive boys' name in United States, ranking #14045 in 2007 with 5 recorded births. The name reached its all-time peak in 2005 with 10 births ranking #7552. Since 1996, the popularity has decreased by 16.7%. In 2007, approximately 1 in every 415,047 boys born was named Seiya. RISING Recent data shows the name is currently rising.