Siena is a distinctive girls' name in England & Wales, ranking #634 in 2005 with 49 recorded births. The name reached its all-time peak in 2013 with 102 births ranking #415. Since 1996, the popularity has increased by 390.0%. In 2005, approximately 1 in every 5,883 girls born was named Siena. RISING Recent data shows the name is currently rising.