|Centuries:||2nd century – 3rd century – 4th century|
|Decades:||210s 220s 230s – 240s – 250s 260s 270s|
|Years:||242 243 244 – 245 – 246 247 248|
|245 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||998|
|Bahá'í calendar||−1599 – −1598|
|English Regnal year||N/A|
|Chinese calendar||甲子年 (Wood Rat)
2941 or 2881
— to —
乙丑年 (Wood Ox)
2942 or 2882
|Coptic calendar||−39 – −38|
|- Vikram Samvat||301–302|
|- Shaka Samvat||167–168|
|- Kali Yuga||3346–3347|
|Igbo calendar||−755 – −754|
|Iranian calendar||377 BP – 376 BP|
|Islamic calendar||389 BH – 388 BH|
|Minguo calendar||1667 before ROC
|Thai solar calendar||788|
|Wikimedia Commons has media related to 245.|
Year 245 (CCXLV) was a common 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 Philippus and Titianus (or, less frequently, year 998 Ab urbe condita). The denomination 245 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 Philip the Arab entrusts Trajan Decius with an important command on the Danube.
- In Britain many thousands of acres of what is now Lincolnshire are inundated by a great flood.
- Plotinus goes to live in Rome.
- Trieu Thi Trinh, a Vietnamese warrior, begins her three year resistance against the invading Chinese.
- Diocles, later the Roman Emperor Diocletian
- Zhuge Shang, son of Zhuge Zhan, grandson of Zhuge Liang (d. 263)
- Jiang Wan, Zhuge Liang's first successor
- Lu Xun, a general of the Kingdom of Wu (b. 183)
- Ammonius Saccas, Greek philosopher (possible date)
- Empress Wu, wife of Liu Bei