Brentley is a distinctive boys' name in United States, ranking #5324 in 2000 with 13 recorded births. The name reached its all-time peak in 2014 with 413 births ranking #637. Since 1996, the popularity has increased by 30.0%. In 2000, approximately 1 in every 151,072 boys born was named Brentley. FALLING Recent data shows the name is currently falling.