Alannah is a moderately popular girls' name in England & Wales, ranking #435 in 2001 with 70 recorded births. The name reached its all-time peak in 2017 with 103 births ranking #427. Since 1996, the popularity has decreased by 17.6%. In 2001, approximately 1 in every 3,828 girls born was named Alannah. RISING Recent data shows the name is currently rising.