Septimius

Septimius is a masculine given name of Latin origin. It was used in ancient Rome as the nomen of the gens Septimia (the Septimii) and appeared in the full names of several officials and emperors. The form is associated with the Latin root septimus, meaning seventh, and is also linked to the name Septimia.

Notable bearers include Septimius Severus, emperor of Rome from 193 to 211 CE, founder of the Severan dynasty. Born in Leptis Magna (in North Africa), he expanded the empire and reformed the administration and army. The name Septimius is part of his official nomen, the main element along with his cognomen Severus. Another figure bearing the name is Publius Septimius Geta, who served as co-emperor with his brother Caracalla after their father's death, until Geta was assassinated in 211 CE.

In Roman onomastics, Septimius can appear as the nomen of members of the Septimia gens and is sometimes encountered in inscriptions and coinage. In modern times the name persists mainly in historical contexts, with limited use as a given name in some European languages; Romanian variant Septimiu exists in contemporary usage.