Brenan is a distinctive boys' name in United States, ranking #4118 in 2010 with 24 recorded births. The name reached its all-time peak in 2009 with 42 births ranking #2850. Since 1996, the popularity has decreased by 33.3%. In 2010, approximately 1 in every 79,934 boys born was named Brenan. FALLING Recent data shows the name is currently falling.