Sian is a distinctive girls' name in United States, ranking #14914 in 2023 with 6 recorded births. The name reached its all-time peak in 2006 with 35 births ranking #4252. Since 1996, the popularity has decreased by 45.5%. In 2023, approximately 1 in every 267,108 girls born was named Sian. FALLING Recent data shows the name is currently falling.