Brennon is a distinctive boys' name in United States, ranking #2150 in 2015 with 64 recorded births. The name reached its all-time peak in 2009 with 189 births ranking #1028. Since 1996, the popularity has decreased by 54.6%. In 2015, approximately 1 in every 29,942 boys born was named Brennon. FALLING Recent data shows the name is currently falling.