Brentley is a distinctive boys' name in United States, ranking #4887 in 2006 with 18 recorded births. The name reached its all-time peak in 2014 with 413 births ranking #637. Since 1996, the popularity has increased by 80.0%. In 2006, approximately 1 in every 114,173 boys born was named Brentley. FALLING Recent data shows the name is currently falling.