| Years: 1320 1321 1322 - 1323 - 1324 1325 1326 | |
| Decades: 1290s 1300s 1310s - 1320s - 1330s 1340s 1350s | |
| Centuries: 13th century - 14th century - 15th century | |
| Gregorian calendar | 1323 MCCCXXIII |
| Ab urbe condita | 2076 |
| Armenian calendar | 772 ԹՎ ՉՀԲ |
| Assyrian calendar | 6073 |
| Balinese saka calendar | 1244–1245 |
| Bengali calendar | 729–730 |
| Berber calendar | 2273 |
| English Regnal year | 16 Edw. 2 – 17 Edw. 2 |
| Buddhist calendar | 1867 |
| Burmese calendar | 685 |
| Byzantine calendar | 6831–6832 |
| Chinese calendar | 壬戌年 (Water Dog) 4020 or 3813 — to — 癸亥年 (Water Pig) 4021 or 3814 |
| Coptic calendar | 1039–1040 |
| Discordian calendar | 2489 |
| Ethiopian calendar | 1315–1316 |
| Hebrew calendar | 5083–5084 |
| Hindu calendars | |
| - Vikram Samvat | 1379–1380 |
| - Shaka Samvat | 1244–1245 |
| - Kali Yuga | 4423–4424 |
| Holocene calendar | 11323 |
| Igbo calendar | 323–324 |
| Iranian calendar | 701–702 |
| Islamic calendar | 722–723 |
| Japanese calendar | Genkō 3 (元亨３年) |
| Javanese calendar | 1234–1235 |
| Julian calendar | 1323 MCCCXXIII |
| Korean calendar | 3656 |
| Minguo calendar | 589 before ROC 民前589年 |
| Nanakshahi calendar | −145 |
| Thai solar calendar | 1865–1866 |
| Tibetan calendar | ཆུ་ཕོ་ཁྱི་ལོ་ (male Water-Dog) 1449 or 1068 or 296 — to — ཆུ་མོ་ཕག་ལོ་ (female Water-Boar) 1450 or 1069 or 297 |
Events
- August 12 - The Treaty of Nöteborg between Sweden and Novgorod (Russia) is signed, regulating the border for the first time
- Canonization of Saint Thomas Aquinas
- Lithuania: Vilnius becomes capital
- Pharos of Alexandria Lighthouse (one of the Seven Wonders of the world) is destroyed by a series of earthquakes
- 24 October-30 October - Edward II stayed at Liverpool Castle.
Births
- Constance of Penafiel, daughter of Juan Manuel "El Scritor" de Castile (died 1345)
Deaths
- Amadeus V of Savoy (born 1252)
- Andrew Harclay, 1st Earl of Carlisle, English military leader
- Gegeen Khan, Grand khan of the Mongol Empire (born 1303)
- Andrew of Halych, king of Galicia with his brother Leo II
- Leo II of Halych, king of Galicia with his brother Andrew, both died fighting Mongol-Tatars (possible Lithuanians)