Herennia Etruscilla: name of a Roman empress, married to Decius (ruled 249-251).
- c.230: Marriage to Decius
- sons: Quintus Herennius Decius; Gaius Valens Hostilianus
- Autumn 249: Decius proclaimed emperor; his wife renamed Herennia Cupressenia Etruscilla Augusta
- June 251: Decius and his eldest son, Quintus Herennius Decius, killed un action
- Trebonianus Gallus becomes emperor; he adopts Hostilian, who soon succumbs to the plague; so does his mother
- Damnatio memoriae