Brennon is a distinctive boys' name in United States, ranking #2555 in 2020 with 50 recorded births. The name reached its all-time peak in 2009 with 189 births ranking #1028. Since 1996, the popularity has decreased by 64.5%. In 2020, approximately 1 in every 34,501 boys born was named Brennon. FALLING Recent data shows the name is currently falling.