Tiarna is a distinctive girls' name in England & Wales, ranking #1037 in 2012 with 34 recorded births. The name reached its all-time peak in 2008 with 37 births ranking #878. Since 1996, the popularity has increased by 580.0%. In 2012, approximately 1 in every 9,472 girls born was named Tiarna. FALLING Recent data shows the name is currently falling.