| Years |
|---|
| Millennium |
| 2nd millennium |
| Centuries |
| Decades |
| Years |
| 1816 by topic |
|---|
| Arts, history, and science |
| Countries |
|
|
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1816 MDCCCXVI |
| Ab urbe condita | 2569 |
| Armenian calendar | 1265 ԹՎ ՌՄԿԵ |
| Assyrian calendar | 6566 |
| Balinese saka calendar | 1737–1738 |
| Bengali calendar | 1223 |
| Berber calendar | 2766 |
| British Regnal year | 56 Geo. 3 – 57 Geo. 3 |
| Buddhist calendar | 2360 |
| Burmese calendar | 1178 |
| Byzantine calendar | 7324–7325 |
| Chinese calendar | 乙亥年 (Wood Pig) 4512 or 4452 — to — 丙子年 (Fire Rat) 4513 or 4453 |
| Coptic calendar | 1532–1533 |
| Discordian calendar | 2982 |
| Ethiopian calendar | 1808–1809 |
| Hebrew calendar | 5576–5577 |
| Hindu calendars | |
| - Vikram Samvat | 1872–1873 |
| - Shaka Samvat | 1737–1738 |
| - Kali Yuga | 4916–4917 |
| Holocene calendar | 11816 |
| Igbo calendar | 816–817 |
| Iranian calendar | 1194–1195 |
| Islamic calendar | 1231–1232 |
| Japanese calendar | Bunka 13 (文化13年) |
| Javanese calendar | 1742–1744 |
| Julian calendar | Gregorian minus 12 days |
| Korean calendar | 4149 |
| Minguo calendar | 96 before ROC 民前96年 |
| Nanakshahi calendar | 348 |
| Thai solar calendar | 2358–2359 |
| Tibetan calendar | ཤིང་མོ་ཕག་ལོ་ (female Wood-Boar) 1942 or 1561 or 789 — to — མེ་ཕོ་བྱི་བ་ལོ་ (male Fire-Rat) 1943 or 1562 or 790 |
1816 (MDCCCXVI) was a leap year starting on Monday of the Gregorian calendar and a leap year starting on Saturday of the Julian calendar, the 1816th year of the Common Era (CE) and Anno Domini (AD) designations, the 816th year of the 2nd millennium, the 16th year of the 19th century, and the 7th year of the 1810s decade. As of the start of 1816, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.