Siddhartha is a distinctive boys' name in United States, ranking #8324 in 1998 with 7 recorded births. The name reached its all-time peak in 2015 with 33 births ranking #3419. Since 1996, the popularity has decreased by 30.0%. In 1998, approximately 1 in every 273,045 boys born was named Siddhartha. STABLE Recent data shows the name is currently stable.