Year 227 (CCXXVII) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Senecio and Fulvius (or, less frequently, year 980 Ab urbe condita). The denomination 227 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.

• Seius Sallustius is executed for the attempted murder of his son-in-law, Emperor Alexander Severus. Sallustius' daughter, as well as Alexander's wife, Sallustia Orbiana, is exiled to Libya.

• The rule of High King Cormac mac Airt begins (approximate).

• King Ardashir I annexes his new empire from the east to the northwest. He conquers, with his army, the provinces of Chorasmia, Sistan and the island Bahrain in the Persian Gulf. The kings of the Kushan Empire and Turan recognize Ardashir as their overlord.

• Dongcheon becomes ruler over the Korean kingdom of Goguryeo.^[1]

• Herennius Etruscus, Roman emperor (d. 251)
• Sima Zhou, Chinese prince and general (d. 283)
• Zhuge Zhan, Chinese general and official (d. 263)

• Han Dang (or Yigong), Chinese general
• He Qi (or Gongmiao), Chinese general
• Seius Sallustius, Roman usurper (Caesar)
• Shi Hui, Chinese official and general (b. 165)
• Xu Huang (or Gongming), Chinese general