Flash is a distinctive boys' name in United States, ranking #9114 in 2016 with 8 recorded births. This places Flash in the bottom 36% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2016 with 8 births ranking #9114. In 2016, approximately 1 in every 237,151 boys born was named Flash. FALLING Recent data shows the name is currently falling.