Decius
Decius was the name
- of a Roman plebeian family, see Decius (family)
- of the Roman emperor Traianus Decius, see Decius (Kaiser) ;
- of the Eastern Roman Patricius and exarch of Ravenna Decius (Patricius) († after 584)
- the Italian lawyer Philippus Decius (1454–1535);
- by the hymn poet Nikolaus Decius (approx. 1485 – after 1546).
- of the Archbishop of Bari Decius Caracciolo (–1613);
- of the Neapolitan nuncio, archbishop and cardinal Decius Carafa (–1626);
Decius stands for
- Bookstore Decius , a specialist bookstore based in Hanover