Seidy is a distinctive girls' name in United States, ranking #7516 in 2003 with 15 recorded births. The name reached its all-time peak in 2013 with 19 births ranking #6683. Since 1996, the popularity has increased by 150.0%. In 2003, approximately 1 in every 121,803 girls born was named Seidy. RISING Recent data shows the name is currently rising.