Brett is a moderately popular boys' name in United States, ranking #188 in 2001 with 1,964 recorded births. The name reached its all-time peak in 1996 with 3,577 births ranking #110. Since 1996, the popularity has decreased by 45.1%. In 2001, approximately 1 in every 989 boys born was named Brett. FALLING Recent data shows the name is currently falling.