Brennon is a distinctive boys' name in United States, ranking #973 in 2001 with 158 recorded births. The name reached its all-time peak in 2009 with 189 births ranking #1028. Since 1996, the popularity has increased by 12.1%. In 2001, approximately 1 in every 12,296 boys born was named Brennon. FALLING Recent data shows the name is currently falling.