Finnian is a distinctive boys' name in United States, ranking #1366 in 2014 with 125 recorded births. The name reached its all-time peak in 2016 with 187 births ranking #1059. Since 1996, the popularity has increased by 1,685.7%. In 2014, approximately 1 in every 15,364 boys born was named Finnian. STABLE Recent data shows the name is currently stable.