|Millennium:||1st millennium BC|
|169 BC by topic|
|Gregorian calendar||169 BC|
|Ab urbe condita||585|
|Ancient Egypt era||XXXIII dynasty, 155|
|- Pharaoh||Ptolemy VI Philometor, 12|
|Ancient Greek era||152nd Olympiad, year 4|
|Balinese saka calendar||N/A|
|Chinese calendar||辛未年 (Metal Goat)|
2528 or 2468
— to —
壬申年 (Water Monkey)
2529 or 2469
|Coptic calendar||−452 – −451|
|Ethiopian calendar||−176 – −175|
|- Vikram Samvat||−112 – −111|
|- Shaka Samvat||N/A|
|- Kali Yuga||2932–2933|
|Iranian calendar||790 BP – 789 BP|
|Islamic calendar||814 BH – 813 BH|
|Minguo calendar||2080 before ROC|
|Seleucid era||143/144 AG|
|Thai solar calendar||374–375|
−42 or −423 or −1195
— to —
−41 or −422 or −1194
Year 169 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Philippus and Caepio (or, less frequently, year 585 Ab urbe condita). The denomination 169 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.
- Macedonian forces led by Perseus of Macedon trap a Roman army led by Consul Quintus Marcius Phillipus near Tempe, but the Macedonians fail to take advantage of their resulting superior tactical position.
- King Perseus asks the Seleucid King Antiochus IV to join forces with him against the danger that Rome presents to all of the Hellenic monarchs. Antiochus IV does not respond.
- Lex Voconia (The Voconian Law) is introduced in Rome by the tribune, Quintus Voconius Saxa, with the support of Cato the Elder. This law prohibits those who own property valued at 100,000 sesterces from making a woman their heir.
- Liu Fei, Chinese prince of the Han Dynasty. He is also the son of Emperor Jing and a half-brother of Emperor Wu (d. 128 BC)
- Quintus Ennius, Roman epic poet, dramatist, and satirist, the most influential of the early Latin poets – and often called the founder of Roman literature or the father of Roman poetry. His epic Annales, a poem telling the story of Rome from the wanderings of Aeneas to Ennius' own time, remains the national epic until it is later eclipsed by Virgil's Aeneid.