Year 138 (CXXXVIII) was a common year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Niger and Camerinus (or, less frequently, year 891 Ab urbe condita). The denomination 138 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.
Events
By place
Roman Empire
- February 25 – Emperor Hadrian makes Antoninus Pius his successor, on condition that he adopt Marcus Aurelius and Lucius Verus.
- July 10 – Hadrian dies after a heart failure at Baiae, and is buried at Rome in the Gardens of Domitia beside his wife, Vibia Sabina.
- Antoninus Pius succeeds Hadrian as Roman Emperor, and asks the Senate to confer divine honors for Hadrian.
- Construction begins on the Theater of Philadelphia (Amman).
- Hadrian's Villa, Tivoli, Italy, is finished.
Asia
- In Jiaozhi (present-day northern Vietnam), during the Second Era of Northern Domination, a peace agreement was made between the Han governor and the Cham rebels following their uprising in 137. Historical records do not clarify the terms of the agreement.
By topic
Commerce
Births
- Han Zhidi, Chinese emperor of the Han Dynasty (d. 146)
- Marcus Ummidius Quadratus, Roman politician (d. 182)
