Brennyn is a distinctive boys' name in United States, ranking #9777 in 2014 with 7 recorded births. This places Brennyn in the bottom 31% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 15 births ranking #5837. In 2014, approximately 1 in every 274,348 boys born was named Brennyn. RISING Recent data shows the name is currently rising.