Year 154 (CLIV) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelius and Lateranus (or, less frequently, year 907 Ab urbe condita). The denomination 154 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.

• King Eupator of Bosphorus pays tribute to Rome, due to the threat posed by the Alani.
• The Antonine Wall is completed.

• Last (2nd) year of Yongxing era of the Chinese Han Dynasty.
• Adalla becomes ruler of the Korean kingdom of Silla.^[1]

• Anicetus becomes pope of Rome (approximate date).
• Anicetus meets with Polycarp of Smyrna to discuss the Computus, the date of Easter in the Christian liturgical calendar.
• Change of Patriarch of Constantinople from Patriarch Euzois to Patriarch Laurence.

• July 11 – Bardaisan, Syriac gnostic (d. 222)

• Euzois, bishop of Byzantium
• Ilseong, Korean ruler of Silla^[1]
• Pius I, pope of Rome (approximate date)