Brennon is a distinctive boys' name in United States, ranking #1028 in 2009 with 189 recorded births. The name reached its all-time peak in 2009 with 189 births ranking #1028. Since 1996, the popularity has increased by 34.0%. In 2009, approximately 1 in every 10,494 boys born was named Brennon. FALLING Recent data shows the name is currently falling.