Sianni is a distinctive girls' name in United States, ranking #5872 in 2002 with 20 recorded births. The name reached its all-time peak in 2025 with 128 births ranking #1629. Since 1996, the popularity has increased by 185.7%. In 2002, approximately 1 in every 89,841 girls born was named Sianni. RISING Recent data shows the name is currently rising.