Alannah is a distinctive girls' name in England & Wales, ranking #705 in 2025 with 52 recorded births. The name reached its all-time peak in 2017 with 103 births ranking #427. Since 1996, the popularity has decreased by 38.8%. In 2025, approximately 1 in every 4,871 girls born was named Alannah. RISING Recent data shows the name is currently rising.