391 BC

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Millennium: 1st millennium BC
391 BC in various calendars
Gregorian calendar 391 BC
Ab urbe condita 363
Ancient Egypt era XXIX dynasty, 8
- Pharaoh Hakor, 3
Ancient Greek era 97th Olympiad, year 2
Assyrian calendar 4360
Balinese saka calendar N/A
Bengali calendar −983
Berber calendar 560
Buddhist calendar 154
Burmese calendar −1028
Byzantine calendar 5118–5119
Chinese calendar 己丑(Earth Ox)
2306 or 2246
    — to —
庚寅年 (Metal Tiger)
2307 or 2247
Coptic calendar −674 – −673
Discordian calendar 776
Ethiopian calendar −398 – −397
Hebrew calendar 3370–3371
Hindu calendars
 - Vikram Samvat −334 – −333
 - Shaka Samvat N/A
 - Kali Yuga 2710–2711
Holocene calendar 9610
Iranian calendar 1012 BP – 1011 BP
Islamic calendar 1043 BH – 1042 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 1943
Minguo calendar 2302 before ROC
Nanakshahi calendar −1858
Thai solar calendar 152–153
Tibetan calendar 阴土牛年
(female Earth-Ox)
−264 or −645 or −1417
    — to —
(male Iron-Tiger)
−263 or −644 or −1416

Year 391 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Flavus, Medullinus, Camerinus, Fusus, Mamercinus and Mamercinus (or, less frequently, year 363 Ab urbe condita). The denomination 391 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[edit]

Persian Empire[edit]

  • The Persian satrap, Struthas, pursues an anti-Spartan policy, prompting the Spartans to order their governor to the Greek cities of Ionia, Thibron, to attack him. Thibron successfully ravages Persian territory for a time, but is killed, along with a number of his men, when Struthas ambushes them.
  • Evagoras of Salamis and the Persians battle each other for control of Cyprus. Aided by the Athenians and the Egyptians, Evagoras extends his rule over the greater part of Cyprus and to several cities of Anatolia.


  • The Athenian general, Iphicrates, with a force composed almost entirely of light troops and peltasts (javelin throwers), wins a decisive victory against the Spartan regiment that has been stationed at Lechaeum in the Battle of Lechaeum. This is the first time that a force of light infantry defeats a unit of Greek hoplites.
  • Iphicrates also campaigns against Phlius and Arcadia, decisively defeating their armies and plundering the territory of the Arcadians when they refuse to engage his troops. After this victory, an Argive army marches to Corinth, and, seizing the Acrocorinth, effectively merges Argos and Corinth.


Roman Republic[edit]

  • The Roman dictator Marcus Furius Camillus is accused of making an unfair distribution of the spoils of his victory at Veii. He goes into voluntary exile.
  • Quintus Fabius Ambustus and two other Fabii are sent as ambassadors by Rome to a wandering tribe of Celts (whom the Romans call Gauls), under Brennus, who are advancing down the Tiber while the Celtic army is besieging Clusium. After Quintus Fabius' group become involved in a skirmish with the Gauls and kill one of the Gauls' leaders, the offended Gauls demand that Rome surrender the Fabii members to them. The Romans refuse, so the Gauls advance on Rome.