Julianus

Julianus may refer to:


 * Julianus (frog), a genus of frogs in the family Hylidae
 * Flavius Claudius Julianus (331–363), Roman emperor from 361 to 363 best known as Julian
 * Saint Julianus (disambiguation), several Roman-era Christian saints
 * Julianus (consul) (fl. 130 AD), Roman senator
 * Julius Julianus (fl. 315–325 AD), Roman politician
 * Lucius Julius Julianus, Roman military officer
 * Lucius Julius Vehilius Gratus Julianus, Roman military officer