|Centuries:||3rd century – 4th century – 5th century|
|Decades:||320s 330s 340s – 350s – 360s 370s 380s|
|Years:||349 350 351 – 352 – 353 354 355|
|352 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1105|
|Chinese calendar||辛亥年 (Metal Pig)
3048 or 2988
— to —
壬子年 (Water Rat)
3049 or 2989
|- Vikram Samvat||408–409|
|- Shaka Samvat||274–275|
|- Kali Yuga||3453–3454|
|Iranian calendar||270 BP – 269 BP|
|Islamic calendar||278 BH – 277 BH|
|Minguo calendar||1560 before ROC
|Seleucid era||663/664 AG|
|Thai solar calendar||894–895|
Year 352 (CCCLII) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Decentius and Paulus (or, less frequently, year 1105 Ab urbe condita). The denomination 352 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- Emperor Constantius II invades northern Italy in pursuit of the usurper Magnus Magnentius, who withdraws with his army to Gaul. He declares an amnesty for Magnentius' soldiers, many of whom desert to him.
- By the end of the year Constantius enters Milan.
- The Alamanni and the Franks cross the Rhine and defeat the depleted Roman units left at the frontier. The Germans take control of around 40 towns and cities between the Moselle and the Rhine.
- Constantius Gallus sends his general (magister equitum) Ursicinus to forcefully put down the Jewish revolt in Palestine. The rebels destroyed the cities Diopolis and Tiberias, while Diocesarea is razed to the ground. Ursicinus gives the order to kill thousands of Jews, even children. After the revolt, a permanent garrison is stationed in Galilee.
- War begins between the Huns and the Alans.
- Ran Wei is destroyed by a Xianbei invasion, which also reaches the Yangtze River in the territory of the Jin Dynasty.
Arts and sciences
- May 17 – Pope Julius I dies after a 15-year reign in which he has made himself the chief opponent of Arianism. He is succeeded by Pope Liberius as the 36th pope who immediately writes to Constantius II requesting a council at Aquileia to discuss the former Alexandrian patriarch Athanasius, who opposes the Arian belief to which the emperor subscribes.