Sydni is a distinctive girls' name in United States, ranking #11816 in 2025 with 8 recorded births. The name reached its all-time peak in 2000 with 468 births ranking #559. Since 1996, the popularity has decreased by 96.6%. In 2025, approximately 1 in every 200,908 girls born was named Sydni. RISING Recent data shows the name is currently rising.