Year 249 (CCXLIX) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Gavius and Aquilinus (or, less frequently, year 1002 Ab urbe condita). The denomination 249 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.
|Ab urbe condita||1002|
|Balinese saka calendar||170–171|
|Chinese calendar||戊辰年 (Earth Dragon)|
2945 or 2885
— to —
己巳年 (Earth Snake)
2946 or 2886
|Coptic calendar||−35 – −34|
|- Vikram Samvat||305–306|
|- Shaka Samvat||170–171|
|- Kali Yuga||3349–3350|
|Iranian calendar||373 BP – 372 BP|
|Islamic calendar||384 BH – 383 BH|
|Minguo calendar||1663 before ROC|
|Seleucid era||560/561 AG|
|Thai solar calendar||791–792|
375 or −6 or −778
— to —
376 or −5 or −777
- Trajan Decius puts down a revolt in Moesia and Pannonia. Loyal legionaries proclaim him emperor, and he leads them into Italy.
- Battle of Verona: Decius defeats and kills Emperor Philip the Arab.
- Decius begins persecuting Christians, and others refusing to participate in Emperor worship.
- February 5 – Incident at Gaoping Tombs: In the Chinese state of Cao Wei, regent Sima Yi, in a coup d'état, forces his co-regent Cao Shuang to relinquish his power, after taking control of the capital city of Luoyang. Sima Yi issues a memorial, which lists the various crimes he and his associates has committed.
- In Alexandria, the populace pillages the homes of Christians.
- Shi Chong (or Jilun), Chinese politician and statesman
- February 9
- May 18 – Jiang Ji (or Zitong), Chinese general
- Jotapianus (or Jotapian), Roman usurper
- Ma Zhong (or Dexin), Chinese general and politician
- Philip II (the Younger), Roman emperor (b. 237)
- Philip the Arab, Roman general and emperor (b. 204)
- Quan Cong, Chinese general and politician (b. 198)
- Wang Bi, Chinese philosopher and politician (b. 226)
- Xu Miao (or Jingshan), Chinese politician (b. 172)
- Zhu Ran, Chinese adviser and general (b. 182)
- Chen, Shou (300). Records of the Three Kingdoms (Sanguozhi ed.). China.