Meaning and history
Regulus is a Roman cognomen meaning “prince” or “little king,” formed as a diminutive of Latin rex “king.” It was used by several 3rd-century BC consuls of the gens Atilia, was borne by several early saints, and is also the name of a star in the constellation Leo.
In 2025, 7 babies were recorded with the name Regulus, ranking #9,714 among boys.