Brenan is a distinctive boys' name in United States, ranking #7128 in 2012 with 11 recorded births. The name reached its all-time peak in 2009 with 42 births ranking #2850. Since 1996, the popularity has decreased by 69.4%. In 2012, approximately 1 in every 172,420 boys born was named Brenan. FALLING Recent data shows the name is currently falling.