 | This article needs additional citations for verification. (February 2020) |
| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| AD 31 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | AD 31 XXXI |
| Ab urbe condita | 784 |
| Assyrian calendar | 4781 |
| Balinese saka calendar | N/A |
| Bengali calendar | −562 |
| Berber calendar | 981 |
| Buddhist calendar | 575 |
| Burmese calendar | −607 |
| Byzantine calendar | 5539–5540 |
| Chinese calendar | 庚寅年 (Metal Tiger) 2728 or 2521 — to — 辛卯年 (Metal Rabbit) 2729 or 2522 |
| Coptic calendar | −253 – −252 |
| Discordian calendar | 1197 |
| Ethiopian calendar | 23–24 |
| Hebrew calendar | 3791–3792 |
| Hindu calendars | |
| - Vikram Samvat | 87–88 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3131–3132 |
| Holocene calendar | 10031 |
| Iranian calendar | 591 BP – 590 BP |
| Islamic calendar | 609 BH – 608 BH |
| Javanese calendar | N/A |
| Julian calendar | AD 31 XXXI |
| Korean calendar | 2364 |
| Minguo calendar | 1881 before ROC 民前1881年 |
| Nanakshahi calendar | −1437 |
| Seleucid era | 342/343 AG |
| Thai solar calendar | 573–574 |
| Tibetan calendar | 阳金虎年 (male Iron-Tiger) 157 or −224 or −996 — to — 阴金兔年 (female Iron-Rabbit) 158 or −223 or −995 |
AD 31 (XXXI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Tiberius and Sejanus (or, less frequently, year 784 Ab urbe condita). The denomination AD 31 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.