Year 151 (CLI) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Condianus and Valerius (or, less frequently, year 904 Ab urbe condita). The denomination 151 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.

• Mytilene and Smyrna are destroyed by an earthquake.
• First year of Yuanjia of the Chinese Han dynasty.

• Detail from a rubbing of a stone relief in Wu family shrine (Wuliangci), Jiaxiang, Shandong, is made (Han dynasty).

• Annia Galeria Aurelia Faustina, daughter of Marcus Aurelius
• Zhong Yao, Chinese official and calligrapher (d. 230)

• Kanishka, Indian ruler of the Kushan Empire
• Novatus, Christian saint (approximate date)^[1][2][3][4]