Lyann is a distinctive girls' name in United States, ranking #13898 in 2015 with 7 recorded births. The name reached its all-time peak in 2003 with 14 births ranking #7830. Since 1996, the popularity has decreased by 12.5%. In 2015, approximately 1 in every 254,951 girls born was named Lyann. FALLING Recent data shows the name is currently falling.