431
| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 431 CDXXXI |
| Ab urbe condita | 1184 |
| Assyrian calendar | 5181 |
| Bengali calendar | −162 |
| Berber calendar | 1381 |
| Buddhist calendar | 975 |
| Burmese calendar | −207 |
| Byzantine calendar | 5939–5940 |
| Chinese calendar |
庚午年 (Metal Horse) 3127 or 3067 — to — 辛未年 (Metal Goat) 3128 or 3068 |
| Coptic calendar | 147–148 |
| Discordian calendar | 1597 |
| Ethiopian calendar | 423–424 |
| Hebrew calendar | 4191–4192 |
| Hindu calendars | |
| - Vikram Samvat | 487–488 |
| - Shaka Samvat | 352–353 |
| - Kali Yuga | 3531–3532 |
| Holocene calendar | 10431 |
| Iranian calendar | 191 BP – 190 BP |
| Islamic calendar | 197 BH – 196 BH |
| Javanese calendar | 315–316 |
| Julian calendar | 431 CDXXXI |
| Korean calendar | 2764 |
| Minguo calendar | 1481 before ROC 民前1481年 |
| Nanakshahi calendar | −1037 |
| Seleucid era | 742/743 AG |
| Thai solar calendar | 973–974 |
Year 431 (CDXXXI) 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 Bassus and Antiochus (or, less frequently, year 1184 Ab urbe condita). The denomination 431 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.
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