| Joannes Rualdus | |
| Birth Place: | France |
| Death Date: | 1636 |
| Death Place: | France |
| Nationality: | French |
| Citizenship: | France |
| Occupation: | Scholar, writer |
Joannes Rualdus or Jean Ruault (1570? - 1636) was a French scholar who compiled a Life of Plutarchus which was prefixed to the Paris Edition of 1624, in two volumes folio, of Plutarch's works.[1]