Niall is a distinctive boys' name in England & Wales, ranking #745 in 2025 with 46 recorded births. This places Niall in the top 12% of ranked UK boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1996 with 462 births ranking #106. Since 1996, the popularity has decreased by 90.0%. In 2025, approximately 1 in every 5,912 boys born was named Niall. FALLING Recent data shows the name is currently falling.