Finnian is a distinctive boys' name in United States, ranking #3512 in 1999 with 22 recorded births. The name reached its all-time peak in 2016 with 187 births ranking #1059. Since 1996, the popularity has increased by 214.3%. In 1999, approximately 1 in every 87,277 boys born was named Finnian. STABLE Recent data shows the name is currently stable.