Karthik is a distinctive boys' name in United States, ranking #2378 in 1999 with 38 recorded births. The name reached its all-time peak in 2010 with 79 births ranking #1847. Since 1996, the popularity has increased by 65.2%. In 1999, approximately 1 in every 50,529 boys born was named Karthik. STABLE Recent data shows the name is currently stable.