Su is a distinctive girls' name in United States, ranking #12134 in 2010 with 9 recorded births. The name reached its all-time peak in 2015 with 15 births ranking #7959. Since 1996, the popularity has increased by 28.6%. In 2010, approximately 1 in every 197,481 girls born was named Su. RISING Recent data shows the name is currently rising.