Allyn is a distinctive girls' name in United States, ranking #8913 in 2016 with 12 recorded births. The name reached its all-time peak in 1999 with 31 births ranking #3810. Since 1996, the popularity has decreased by 33.3%. In 2016, approximately 1 in every 147,624 girls born was named Allyn. FALLING Recent data shows the name is currently falling.