Year 4 BC was a common year starting on Tuesday or Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Sabinus and Rufus.

Millennium: 1st millennium BC
Centuries: 2nd century BC1st century BC1st century
Decades: 30s BC  20s BC  10s BC  – 0s BC –  0s  10s  20s
Years: BC BC BCBCBC BC BC
4 BC in other calendars
Gregorian calendar4 BC
III BC
Ab urbe condita750
Ancient Greek era194th Olympiad (victor
Assyrian calendar4747
Balinese saka calendarN/A
Bengali calendar−596
Berber calendar947
Buddhist calendar541
Burmese calendar−641
Byzantine calendar5505–5506
Chinese calendar丙辰(Fire Dragon)
2693 or 2633
    — to —
丁巳年 (Fire Snake)
2694 or 2634
Coptic calendar−287 – −286
Discordian calendar1163
Ethiopian calendar−11 – −10
Hebrew calendar3757–3758
Hindu calendars
 - Vikram Samvat53–54
 - Shaka SamvatN/A
 - Kali Yuga3097–3098
Holocene calendar9997
Iranian calendar625 BP – 624 BP
Islamic calendar644 BH – 643 BH
Javanese calendarN/A
Julian calendar4 BC
III BC
Korean calendar2330
Minguo calendar1915 before ROC
民前1915年
Nanakshahi calendar−1471
Seleucid era308/309 AG
Thai solar calendar539–540
Tibetan calendar阳火龙年
(male Fire-Dragon)
123 or −258 or −1030
    — to —
阴火蛇年
(female Fire-Snake)
124 or −257 or −1029

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Deaths change