| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| AD 81 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | AD 81 LXXXI |
| Ab urbe condita | 834 |
| Assyrian calendar | 4831 |
| Balinese saka calendar | 2–3 |
| Bengali calendar | −512 |
| Berber calendar | 1031 |
| Buddhist calendar | 625 |
| Burmese calendar | −557 |
| Byzantine calendar | 5589–5590 |
| Chinese calendar | 庚辰年 (Metal Dragon) 2778 or 2571 — to — 辛巳年 (Metal Snake) 2779 or 2572 |
| Coptic calendar | −203 – −202 |
| Discordian calendar | 1247 |
| Ethiopian calendar | 73–74 |
| Hebrew calendar | 3841–3842 |
| Hindu calendars | |
| - Vikram Samvat | 137–138 |
| - Shaka Samvat | 2–3 |
| - Kali Yuga | 3181–3182 |
| Holocene calendar | 10081 |
| Iranian calendar | 541 BP – 540 BP |
| Islamic calendar | 558 BH – 557 BH |
| Javanese calendar | N/A |
| Julian calendar | AD 81 LXXXI |
| Korean calendar | 2414 |
| Minguo calendar | 1831 before ROC 民前1831年 |
| Nanakshahi calendar | −1387 |
| Seleucid era | 392/393 AG |
| Thai solar calendar | 623–624 |
| Tibetan calendar | 阳金龙年 (male Iron-Dragon) 207 or −174 or −946 — to — 阴金蛇年 (female Iron-Snake) 208 or −173 or −945 |
A.D. 81 (LXXXI) 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 Silva and Pollio (or, less frequently, year 834 Ab urbe condita). The denomination A.D. 81 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.