Leonidas is a distinctive boys' name in United States, ranking #510 in 2025 with 591 recorded births. The name reached its all-time peak in 2022 with 758 births ranking #421. Since 1996, the popularity has increased by 5,810.0%. In 2025, approximately 1 in every 2,890 boys born was named Leonidas. STABLE Recent data shows the name is currently stable.