Year 386 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Camillus, Cornelius, Fidenas, Cincinnatus, Pulvillus and Poplicola (or, less frequently, year 368 Ab urbe condita). The denomination 386 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.

• Freed from Spartan attacks by the Peace of Antalcidas ("King's Peace") of the previous year, Persia turns to quieting Cyprus and Egypt. Owing to the skill of King Evagoras of Cyprus and of Egypt's Greek mercenary general Chabrias, these wars drag on for the rest of the decade.

• Dionysius I of Syracuse extends the influence and trade of Syracuse to the Adriatic, establishing colonies at Adria, Ancona and Issa.

• The Chinese city of Handan is founded by the State of Zhao.

• Mithridates II of Cius, ruler of Cius in Mysia from 337 to 302 BC

• Aristophanes, Greek playwright (b. c. 456 BC)