Brennon is a distinctive boys' name in United States, ranking #2002 in 2014 with 71 recorded births. The name reached its all-time peak in 2009 with 189 births ranking #1028. Since 1996, the popularity has decreased by 49.6%. In 2014, approximately 1 in every 27,048 boys born was named Brennon. FALLING Recent data shows the name is currently falling.