Leo is an extremely popular boys' name in England & Wales, ranking #6 in 2021 with 3,465 recorded births. The name reached its all-time peak in 2017 with 3,781 births ranking #7. Since 1996, the popularity has increased by 2,225.5%. In 2021, approximately 1 in every 85 boys born was named Leo. STABLE Recent data shows the name is currently stable.