Decius (disambiguation)

Decius was a 3rd-century Roman emperor.

Decius may also refer to:

• Decia gens for several other Ancient Romans
• Publius Decius Mus (consul 340 BC), Roman general and politician that sacrificed himself in battle during the Latin War
• Decius (consul 529), Flavius Decius (fl. 529-546), politician of the Eastern Roman Empire
• Decius (Exarch), first Exarch of Ravenna 584–585
• Decius Wadsworth (1768-1821), Colonel in the Ordnance Corps of the United States Army who, in 1817, created Wadsworth's cipher
• Filippo Decio (1454–1535), Italian jurist
• Nikolaus Decius (c.1485–1541), German minister and hymn writer
• Tom Cross (computer security), American technology expert who works under the pseudonym Decius, from Decius Wadsworth
• A misspelling of Decimus Junius Brutus Albinus as "Decius Brutus" in William Shakespeare's Julius Caesar