Fynn is a distinctive boys' name in England & Wales, ranking #515 in 2006 with 59 recorded births. The name reached its all-time peak in 2008 with 71 births ranking #489. Since 1996, the popularity has increased by 436.4%. In 2006, approximately 1 in every 5,429 boys born was named Fynn. FALLING Recent data shows the name is currently falling.