Brentley is a distinctive boys' name in United States, ranking #642 in 2015 with 411 recorded births. The name reached its all-time peak in 2014 with 413 births ranking #637. Since 1996, the popularity has increased by 4,010.0%. In 2015, approximately 1 in every 4,662 boys born was named Brentley. FALLING Recent data shows the name is currently falling.