Lyann is a distinctive girls' name in United States, ranking #9863 in 2005 with 11 recorded births. The name reached its all-time peak in 2003 with 14 births ranking #7830. Since 1996, the popularity has increased by 37.5%. In 2005, approximately 1 in every 167,973 girls born was named Lyann. FALLING Recent data shows the name is currently falling.