|Millennium:||1st millennium BC|
|Centuries:||3rd century BC – 2nd century BC – 1st century BC|
|Decades:||140s BC 130s BC 120s BC – 110s BC – 100s BC 90s BC 80s BC|
|Years:||122 BC 121 BC 120 BC – 119 BC – 118 BC 117 BC 116 BC|
|119 BC by topic|
|Gregorian calendar||119 BC|
|Ab urbe condita||635|
|Ancient Egypt era||XXXIII dynasty, 205|
|- Pharaoh||Ptolemy VIII Physcon, 27|
|Ancient Greek era||165th Olympiad, year 2|
|Chinese calendar||辛酉年 (Metal Rooster)
2578 or 2518
— to —
壬戌年 (Water Dog)
2579 or 2519
|Coptic calendar||−402 – −401|
|Ethiopian calendar||−126 – −125|
|- Vikram Samvat||−62 – −61|
|- Shaka Samvat||N/A|
|- Kali Yuga||2983–2984|
|Iranian calendar||740 BP – 739 BP|
|Islamic calendar||763 BH – 762 BH|
|Minguo calendar||2030 before ROC
|Seleucid era||193/194 AG|
|Thai solar calendar||424–425|
|Wikimedia Commons has media related to 119 BC.|
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.