403 BC

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Millennium: 1st millennium BC
403 BC in various calendars
Gregorian calendar403 BC
Ab urbe condita351
Ancient Egypt eraXXVIII dynasty, 2
- PharaohAmyrtaeus, 2
Ancient Greek era94th Olympiad, year 2
Assyrian calendar4348
Balinese saka calendarN/A
Bengali calendar−995
Berber calendar548
Buddhist calendar142
Burmese calendar−1040
Byzantine calendar5106–5107
Chinese calendar丁丑年 (Fire Ox)
2294 or 2234
    — to —
戊寅年 (Earth Tiger)
2295 or 2235
Coptic calendar−686 – −685
Discordian calendar764
Ethiopian calendar−410 – −409
Hebrew calendar3358–3359
Hindu calendars
 - Vikram Samvat−346 – −345
 - Shaka SamvatN/A
 - Kali Yuga2698–2699
Holocene calendar9598
Iranian calendar1024 BP – 1023 BP
Islamic calendar1055 BH – 1054 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar1931
Minguo calendar2314 before ROC
Nanakshahi calendar−1870
Thai solar calendar140–141
Tibetan calendar阴火牛年
(female Fire-Ox)
−276 or −657 or −1429
    — to —
(male Earth-Tiger)
−275 or −656 or −1428

Year 403 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Mamercinus, Varus, Potitus, Iullus, Crassus and Fusus (or, less frequently, year 351 Ab urbe condita). The denomination 403 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]


  • Thrasybulus leads the democratic resistance to the new oligarchic government, known as the Thirty Tyrants, that the victorious Spartans have imposed on Athens. He commands a small force of exiles that invades Attica and, in successive battles, defeats first a Spartan garrison and then the forces of the oligarchic government (which includes the Spartan general, Lysander) in the Battle of Munychia. The leader of the Thirty Tyrants, Critias, is killed in the battle.
  • The Battle of Piraeus is fought between Athenian exiles, who have defeated the government of the Thirty Tyrants and occupied Piraeus, and a Spartan force sent to combat them. In the battle, the Spartans narrowly defeat the exiles, with both sides suffering large numbers of casualties. After the battle, the Agiad King of Sparta, Pausanias arranges a settlement between the two parties which allows the reunification of Athens and Piraeus, and the re-establishment of democratic government in Athens. The remaining oligarchic Thirty Tyrants are allowed to flee to Eleusis.
  • Thrasybulus restores democratic institutions to Athens and grants amnesties to all except the oligarchic extremists. He is helped by Lysias, the Athenian orator, in arguing the case against the oligarchy.
  • Andocides, Athenian orator and politician, who has been implicated in the mutilation of the Herms on the eve of the departure of the Athenian expedition against Sicily in 415 BC, returns from exile under the general amnesty.



  • Rome elects eight military tribunes with consular power; Manlius Aemilius Mamercus, Lucius Valerius Potitus, Appius Claudius Crassus, Marcus Quinctilius Varus, Lucius Julius Julus, Marcus Postumius, Marcus Furius Camillus, and Marcus Postumius [1]

By topic[edit]





  1. ^ Livius, Titus. The Early History of Rome. the Penguin Group. p. 367. ISBN 978-0-140-44809-2.