Brennen is a distinctive boys' name in United States, ranking #3425 in 2023 with 34 recorded births. The name reached its all-time peak in 2009 with 455 births ranking #580. Since 1996, the popularity has decreased by 86.6%. In 2023, approximately 1 in every 50,252 boys born was named Brennen. FALLING Recent data shows the name is currently falling.