Tiarna is a distinctive girls' name in England & Wales, ranking #1155 in 2014 with 30 recorded births. The name reached its all-time peak in 2008 with 37 births ranking #878. Since 1996, the popularity has increased by 500.0%. In 2014, approximately 1 in every 10,222 girls born was named Tiarna. FALLING Recent data shows the name is currently falling.