Finnian is a distinctive boys' name in England & Wales, ranking #596 in 1999 with 30 recorded births. The name reached its all-time peak in 2021 with 33 births ranking #907. Since 1996, the popularity has increased by 50.0%. In 1999, approximately 1 in every 10,108 boys born was named Finnian. STABLE Recent data shows the name is currently stable.