Brennon is a distinctive boys' name in United States, ranking #980 in 2000 with 152 recorded births. This places Brennon in the top 8% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2009 with 189 births ranking #1028. In 2000, approximately 1 in every 12,921 boys born was named Brennon. FALLING Recent data shows the name is currently falling.