Sydni is a distinctive girls' name in United States, ranking #1937 in 2010 with 104 recorded births. The name reached its all-time peak in 2000 with 468 births ranking #559. Since 1996, the popularity has decreased by 55.7%. In 2010, approximately 1 in every 17,090 girls born was named Sydni. RISING Recent data shows the name is currently rising.