|Millennium:||1st millennium BC|
|Centuries:||5th century BC – 4th century BC – 3rd century BC|
|Decades:||410s BC 400s BC 390s BC – 380s BC – 370s BC 360s BC 350s BC|
|Years:||392 BC 391 BC 390 BC – 389 BC – 388 BC 387 BC 386 BC|
|389 BC by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Gregorian calendar||389 BC
|Ab urbe condita||365|
|English Regnal year||N/A|
— to —壬辰年
|- Vikram Samvat||-332–-331|
|- Shaka Samvat||N/A|
|- Kali Yuga||2713–2714|
|- Ǹrí Ìgbò||-1388–-1387|
|Iranian calendar||1010 BP – 1009 BP|
|Islamic calendar||1041 BH – 1040 BH|
|Juche calendar||N/A (before 1912)|
|Minguo calendar||2300 before ROC
|Thai solar calendar||155|
|Wikimedia Commons has media related to: 389 BC|
Year 389 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Poplicola, Capitolinus, Esquilinus, Mamercinus, Cornelius and Albinus (or, less frequently, year 365 Ab urbe condita). The denomination 389 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.
By place 
- A Spartan expeditionary force under King Agesilaus II crosses the Gulf of Corinth to attack Acarnania, an ally of the anti-Spartan coalition. Agesilaus is eventually able to draw them into a pitched battle, in which the Acarnanians are routed.
- The Athenian general, Thrasybulus, leads a force of triremes to levy tribute from cities around the Aegean and support Rhodes, where a democratic government is struggling against Sparta. On this campaign, Thrasybulus captures Byzantium, imposes a duty on ships passing through the Hellespont, and collects tribute from many of the islands of the Aegean.
- Wu Qi, the Prime Minister of the State of Chu, enacts his first series of political, municipal, and martial reforms. Wu Qi gains the ire and distrust of Chu officials and aristocratic elite who are against his crusades to sweep up corruption in the state and limit their power. He is eventually assassinated in 381 BC at the funeral of King Diao of Chu, although his assassins are executed shortly after by the newly enthroned King Su of Chu.
- This is the latest possible date for the compilation of the historical text Zuo Zhuan, attributed to a blind historian known as Zuo Qiuming.