Brien is a distinctive boys' name in United States, ranking #1967 in 1999 with 49 recorded births. This places Brien in the top 17% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 49 births ranking #1967. Since 1996, the popularity has increased by 11.4%. In 1999, approximately 1 in every 39,185 boys born was named Brien. RISING Recent data shows the name is currently rising.