Decianus (disambiguation)

Decianus is the name of several ancient Romans, including:


 * C. Appuleius Decianus, tribune of the plebs in 98 BC
 * Catus Decianus, the procurator of Roman Britain in 61 AD who created the conditions for Boudica's revolt

Decianus is also the Latin form of the Italian name Deciano or Deciani:
 * Tiberio Deciani, Italian jurist and humanist (1509–1582)