Seidy is a distinctive girls' name in United States, ranking #7692 in 2008 with 17 recorded births. The name reached its all-time peak in 2013 with 19 births ranking #6683. Since 1996, the popularity has increased by 183.3%. In 2008, approximately 1 in every 111,219 girls born was named Seidy. RISING Recent data shows the name is currently rising.