Sydni is a distinctive girls' name in United States, ranking #3474 in 2017 with 45 recorded births. The name reached its all-time peak in 2000 with 468 births ranking #559. Since 1996, the popularity has decreased by 80.9%. In 2017, approximately 1 in every 38,353 girls born was named Sydni. RISING Recent data shows the name is currently rising.