| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 923 by topic | 
|---|
| Leaders | 
| Categories | 
| Gregorian calendar | 923 CMXXIII  | 
| Ab urbe condita | 1676 | 
| Armenian calendar | 372 ԹՎ ՅՀԲ  | 
| Assyrian calendar | 5673 | 
| Balinese saka calendar | 844–845 | 
| Bengali calendar | 329–330 | 
| Berber calendar | 1873 | 
| Buddhist calendar | 1467 | 
| Burmese calendar | 285 | 
| Byzantine calendar | 6431–6432 | 
| Chinese calendar |  壬午年 (Water  Horse) 3620 or 3413 — to — 癸未年 (Water Goat) 3621 or 3414  | 
| Coptic calendar | 639–640 | 
| Discordian calendar | 2089 | 
| Ethiopian calendar | 915–916 | 
| Hebrew calendar | 4683–4684 | 
| Hindu calendars | |
| - Vikram Samvat | 979–980 | 
| - Shaka Samvat | 844–845 | 
| - Kali Yuga | 4023–4024 | 
| Holocene calendar | 10923 | 
| Iranian calendar | 301–302 | 
| Islamic calendar | 310–311 | 
| Japanese calendar |  Engi 23 / Enchō 1 (延長元年)  | 
| Javanese calendar | 822–823 | 
| Julian calendar | 923 CMXXIII  | 
| Korean calendar | 3256 | 
| Minguo calendar | 989 before ROC  民前989年  | 
| Nanakshahi calendar | −545 | 
| Seleucid era | 1234/1235 AG | 
| Thai solar calendar | 1465–1466 | 
| Tibetan calendar | ཆུ་ཕོ་རྟ་ལོ་ (male Water-Horse) 1049 or 668 or −104 — to — ཆུ་མོ་ལུག་ལོ་ (female Water-Sheep) 1050 or 669 or −103  | 
 Year 923 ( CMXXIII ) was a common year starting on Wednesday of the Julian calendar.