| Millennium: | 1st millennium |
|---|---|
| Centuries: | 7th century – 8th century – 9th century |
| Decades: | 690s 700s 710s – 720s – 730s 740s 750s |
| Years: | 720 721 722 – 723 – 724 725 726 |
| 723 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 723 DCCXXIII |
| Ab urbe condita | 1476 |
| Armenian calendar | 172 ԹՎ ՃՀԲ |
| Assyrian calendar | 5473 |
| Bahá'í calendar | -1121–-1120 |
| Bengali calendar | 130 |
| Berber calendar | 1673 |
| English Regnal year | N/A |
| Buddhist calendar | 1267 |
| Burmese calendar | 85 |
| Byzantine calendar | 6231–6232 |
| Chinese calendar | 壬戌年十一月二十日 (3359/3419-11-20) — to —
癸亥年十一月廿九日(3360/3420-11-29) |
| Coptic calendar | 439–440 |
| Ethiopian calendar | 715–716 |
| Hebrew calendar | 4483–4484 |
| Hindu calendars | |
| - Vikram Samvat | 779–780 |
| - Shaka Samvat | 645–646 |
| - Kali Yuga | 3824–3825 |
| Holocene calendar | 10723 |
| Iranian calendar | 101–102 |
| Islamic calendar | 104–105 |
| Japanese calendar | |
| Korean calendar | 3056 |
| Minguo calendar | 1189 before ROC 民前1189年 |
| Thai solar calendar | 1266 |
Year 723 (DCCXXIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 723 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.