The name Leonidas is a boy's name of Greek origin meaning "lion". Leonidas is ranked #497 on our popularity charts and is often added to lists like Boy Baby Names Moving Up Fast and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
Leonidas is an ancient name that has started rising again along with centuries-old names such as Augustus and Cato. The original Leonidas was the most famous of Sparta's warriors, sacrificing his life at the Battle of Thermopylae; there is also a saint Leonidas. More stately than Leon, more melodious than Leonard, Leonidas is a leonine name that commands respect. In Portuguese, Spanish, and French, the name is pronounced lee-OH-nee-dus, but Americans tend to say lee-oh-NYE-dus.