Lyann is a distinctive girls' name in United States, ranking #16171 in 2010 with 6 recorded births. The name reached its all-time peak in 2003 with 14 births ranking #7830. Since 1996, the popularity has decreased by 25.0%. In 2010, approximately 1 in every 296,221 girls born was named Lyann. FALLING Recent data shows the name is currently falling.