Brett is a moderately popular boys' name in United States, ranking #389 in 2010 with 729 recorded births. The name reached its all-time peak in 1996 with 3,577 births ranking #110. Since 1996, the popularity has decreased by 79.6%. In 2010, approximately 1 in every 2,632 boys born was named Brett. FALLING Recent data shows the name is currently falling.