Brennon is a distinctive boys' name in United States, ranking #5648 in 2025 with 16 recorded births. The name reached its all-time peak in 2009 with 189 births ranking #1028. Since 1996, the popularity has decreased by 88.7%. In 2025, approximately 1 in every 106,755 boys born was named Brennon. FALLING Recent data shows the name is currently falling.