Fynn is a moderately popular boys' name in England & Wales, ranking #489 in 2008 with 71 recorded births. The name reached its all-time peak in 2008 with 71 births ranking #489. Since 1996, the popularity has increased by 545.5%. In 2008, approximately 1 in every 4,780 boys born was named Fynn. FALLING Recent data shows the name is currently falling.