| Nonia Celsa | |
|---|---|
 17th-century imaginary portrait | |
| Empress of the Roman Empire | |
| Tenure | 217–218 |
| Spouse | Macrinus |
| Issue | Diadumenian |
| Father | Haius Diadumenianus (possibly) |
Nonia Celsa is the name given by the Historia Augusta to the wife of Roman Emperor Macrinus (and presumed mother of his son and co-emperor Diadumenian), who ruled briefly in 217–218. The name is regarded as highly dubious by modern historians.