Karthik is a distinctive boys' name in United States, ranking #4949 in 2025 with 20 recorded births. The name reached its all-time peak in 2010 with 79 births ranking #1847. Since 1996, the popularity has decreased by 13.0%. In 2025, approximately 1 in every 85,404 boys born was named Karthik. STABLE Recent data shows the name is currently stable.