Fynn is a distinctive boys' name in England & Wales, ranking #626 in 2015 with 57 recorded births. The name reached its all-time peak in 2008 with 71 births ranking #489. Since 1996, the popularity has increased by 418.2%. In 2015, approximately 1 in every 5,846 boys born was named Fynn. FALLING Recent data shows the name is currently falling.