Brynna is a distinctive girls' name in United States, ranking #1349 in 2011 with 171 recorded births. The name reached its all-time peak in 2011 with 171 births ranking #1349. Since 1996, the popularity has increased by 235.3%. In 2011, approximately 1 in every 10,285 girls born was named Brynna. FALLING Recent data shows the name is currently falling.