Lucius is one of the oldest Roman first names and comes from the Latin lux, "light"; it was given to boys born at daybreak. Three popes and several Roman statesmen bore it, and recent readers and moviegoers know it from Lucius Malfoy in Harry Potter and Lucius Fox in the Batman films. Lucius ranked number 3123 in the United States in 2000 and has moved up to number 1129 in 2025, its best rank so far.