403 BC

Millennium: 1st millennium BC
Centuries:
Decades:
Years:
403 BC in various calendars
Gregorian calendar403 BC
CDIII 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)
2295 or 2088
    — to —
戊寅年 (Earth Tiger)
2296 or 2089
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
民前2314年
Nanakshahi calendar−1870
Thai solar calendar140–141
Tibetan calendar阴火牛年
(female Fire-Ox)
−276 or −657 or −1429
    — to —
阳土虎年
(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.