Finnian is a distinctive boys' name in United States, ranking #1276 in 2008 with 136 recorded births. The name reached its all-time peak in 2016 with 187 births ranking #1059. Since 1996, the popularity has increased by 1,842.9%. In 2008, approximately 1 in every 15,000 boys born was named Finnian. STABLE Recent data shows the name is currently stable.