Briannon is a distinctive girls' name in United States, ranking #10244 in 2001 with 9 recorded births. This places Briannon in the bottom 43% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 11 births ranking #8084. In 2001, approximately 1 in every 200,062 girls born was named Briannon. FALLING Recent data shows the name is currently falling.