| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| AD 123 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 123 CXXIII |
| Ab urbe condita | 876 |
| Assyrian calendar | 4873 |
| Balinese saka calendar | 44–45 |
| Bengali calendar | −470 |
| Berber calendar | 1073 |
| Buddhist calendar | 667 |
| Burmese calendar | −515 |
| Byzantine calendar | 5631–5632 |
| Chinese calendar | 壬戌年 (Water Dog) 2820 or 2613 — to — 癸亥年 (Water Pig) 2821 or 2614 |
| Coptic calendar | −161 – −160 |
| Discordian calendar | 1289 |
| Ethiopian calendar | 115–116 |
| Hebrew calendar | 3883–3884 |
| Hindu calendars | |
| - Vikram Samvat | 179–180 |
| - Shaka Samvat | 44–45 |
| - Kali Yuga | 3223–3224 |
| Holocene calendar | 10123 |
| Iranian calendar | 499 BP – 498 BP |
| Islamic calendar | 514 BH – 513 BH |
| Javanese calendar | N/A |
| Julian calendar | 123 CXXIII |
| Korean calendar | 2456 |
| Minguo calendar | 1789 before ROC 民前1789年 |
| Nanakshahi calendar | −1345 |
| Seleucid era | 434/435 AG |
| Thai solar calendar | 665–666 |
| Tibetan calendar | 阳水狗年 (male Water-Dog) 249 or −132 or −904 — to — 阴水猪年 (female Water-Pig) 250 or −131 or −903 |
Year 123 (CXXIII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Paetinus and Apronius (or, less frequently, year 876 Ab urbe condita). The denomination 123 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.