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| Jovians | |
|---|---|
| Ioviani | |
 Shield pattern of the palatine legion of Ioviani seniores, according to the Notitia Dignitatum. | |
| Type | Senior palatine imperial guard units |
| Herculians | |
|---|---|
| Herculiani | |
 Shield pattern of the palatine legion of Herculiani seniores, according to the Notitia Dignitatum. | |
| Type | Senior palatine imperial guard units |
The Jovians (Latin: Ioviani) and Herculians (Latin: Herculiani) were the senior palatine imperial guard units under the rule of Roman Emperor Diocletian (r. 284–305). They continued in existence thereafter as senior units in the field armies of the Western and Eastern Roman Empires.