Su is a distinctive girls' name in United States, ranking #10308 in 2011 with 11 recorded births. The name reached its all-time peak in 2015 with 15 births ranking #7959. Since 1996, the popularity has increased by 57.1%. In 2011, approximately 1 in every 159,891 girls born was named Su. RISING Recent data shows the name is currently rising.