Brennon is a distinctive boys' name in United States, ranking #1115 in 2008 with 164 recorded births. The name reached its all-time peak in 2009 with 189 births ranking #1028. Since 1996, the popularity has increased by 16.3%. In 2008, approximately 1 in every 12,439 boys born was named Brennon. FALLING Recent data shows the name is currently falling.