| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 231 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 231 CCXXXI |
| Ab urbe condita | 984 |
| Assyrian calendar | 4981 |
| Balinese saka calendar | 152–153 |
| Bengali calendar | −362 |
| Berber calendar | 1181 |
| Buddhist calendar | 775 |
| Burmese calendar | −407 |
| Byzantine calendar | 5739–5740 |
| Chinese calendar | 庚戌年 (Metal Dog) 2928 or 2721 — to — 辛亥年 (Metal Pig) 2929 or 2722 |
| Coptic calendar | −53 – −52 |
| Discordian calendar | 1397 |
| Ethiopian calendar | 223–224 |
| Hebrew calendar | 3991–3992 |
| Hindu calendars | |
| - Vikram Samvat | 287–288 |
| - Shaka Samvat | 152–153 |
| - Kali Yuga | 3331–3332 |
| Holocene calendar | 10231 |
| Iranian calendar | 391 BP – 390 BP |
| Islamic calendar | 403 BH – 402 BH |
| Javanese calendar | 109–110 |
| Julian calendar | 231 CCXXXI |
| Korean calendar | 2564 |
| Minguo calendar | 1681 before ROC 民前1681年 |
| Nanakshahi calendar | −1237 |
| Seleucid era | 542/543 AG |
| Thai solar calendar | 773–774 |
| Tibetan calendar | 阳金狗年 (male Iron-Dog) 357 or −24 or −796 — to — 阴金猪年 (female Iron-Pig) 358 or −23 or −795 |
Year 231 (CCXXXI) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Claudius and Sallustus (or, less frequently, year 984 Ab urbe condita). The denomination 231 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.