Lyann is a distinctive girls' name in United States, ranking #9475 in 2012 with 12 recorded births. The name reached its all-time peak in 2003 with 14 births ranking #7830. Since 1996, the popularity has increased by 50.0%. In 2012, approximately 1 in every 146,729 girls born was named Lyann. FALLING Recent data shows the name is currently falling.