Ailsa is a distinctive girls' name in England & Wales, ranking #1892 in 2025 with 15 recorded births. The name reached its all-time peak in 1998 with 41 births ranking #619. Since 1996, the popularity has decreased by 55.9%. In 2025, approximately 1 in every 16,885 girls born was named Ailsa. STABLE Recent data shows the name is currently stable.