|Millennium:||1st millennium BC|
|119 BC by topic|
Year 119 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Dalmaticus and Cotta (or, less frequently, year 635 Ab urbe condita). The denomination 119 BC 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.
- The second Dalmatian war begins.
- January–June – the Han Chinese army under the commanders Wei Qing (d. 106 BC) and Huo Qubing (140 BC–117 BC) are victorious over the Xiongnu in the Battle of Mobei, taken place in the Orkhon Valley of the Gobi Desert, modern Mongolia.
- Government monopolies are established in iron, salt, liquor in Ancient China.