Sianni is a distinctive girls' name in United States, ranking #12532 in 2007 with 9 recorded births. The name reached its all-time peak in 2025 with 128 births ranking #1629. Since 1996, the popularity has increased by 28.6%. In 2007, approximately 1 in every 213,605 girls born was named Sianni. RISING Recent data shows the name is currently rising.