Finnian is a distinctive boys' name in United States, ranking #1487 in 2025 with 119 recorded births. The name reached its all-time peak in 2016 with 187 births ranking #1059. Since 1996, the popularity has increased by 1,600.0%. In 2025, approximately 1 in every 14,354 boys born was named Finnian. STABLE Recent data shows the name is currently stable.