Siddhartha is a distinctive boys' name in United States, ranking #4245 in 2004 with 21 recorded births. The name reached its all-time peak in 2015 with 33 births ranking #3419. Since 1996, the popularity has increased by 110.0%. In 2004, approximately 1 in every 94,514 boys born was named Siddhartha. STABLE Recent data shows the name is currently stable.