Finnian is a distinctive boys' name in United States, ranking #3749 in 1998 with 19 recorded births. The name reached its all-time peak in 2016 with 187 births ranking #1059. Since 1996, the popularity has increased by 171.4%. In 1998, approximately 1 in every 100,596 boys born was named Finnian. STABLE Recent data shows the name is currently stable.