Leonidas is a moderately popular boys' name in United States, ranking #421 in 2022 with 758 recorded births. The name reached its all-time peak in 2022 with 758 births ranking #421. Since 1996, the popularity has increased by 7,480.0%. In 2022, approximately 1 in every 2,301 boys born was named Leonidas. FALLING Recent data shows the name is currently falling.