Year 316 (CCCXVI) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sabinus and Rufinus (or, less frequently, year 1069 Ab urbe condita). The denomination 316 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.

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• Constantine II, Roman emperor (d. 340)
• Martin of Tours, bishop of Tours (d. 397)

• Diocletian, Roman emperor, commits suicide (b. 244)^[1] (most historians date his death to 311 or 312)
• Blaise, bishop of Sebastea (martyred)
• Bassianus, Roman advisor and politician
• Suo Chen (or Juxiu), Chinese general
• Tuoba Pugen, Chinese chieftain of the Tuoba clan
• Tuoba Yilu, Chinese chieftain of the Tuoba clan