| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 809 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 809 DCCCIX |
| Ab urbe condita | 1562 |
| Armenian calendar | 258 ԹՎ ՄԾԸ |
| Assyrian calendar | 5559 |
| Balinese saka calendar | 730–731 |
| Bengali calendar | 216 |
| Berber calendar | 1759 |
| Buddhist calendar | 1353 |
| Burmese calendar | 171 |
| Byzantine calendar | 6317–6318 |
| Chinese calendar | 戊子年 (Earth Rat) 3506 or 3299 — to — 己丑年 (Earth Ox) 3507 or 3300 |
| Coptic calendar | 525–526 |
| Discordian calendar | 1975 |
| Ethiopian calendar | 801–802 |
| Hebrew calendar | 4569–4570 |
| Hindu calendars | |
| - Vikram Samvat | 865–866 |
| - Shaka Samvat | 730–731 |
| - Kali Yuga | 3909–3910 |
| Holocene calendar | 10809 |
| Iranian calendar | 187–188 |
| Islamic calendar | 193–194 |
| Japanese calendar | Daidō 4 (大同４年) |
| Javanese calendar | 705–706 |
| Julian calendar | 809 DCCCIX |
| Korean calendar | 3142 |
| Minguo calendar | 1103 before ROC 民前1103年 |
| Nanakshahi calendar | −659 |
| Seleucid era | 1120/1121 AG |
| Thai solar calendar | 1351–1352 |
| Tibetan calendar | 阳土鼠年 (male Earth-Rat) 935 or 554 or −218 — to — 阴土牛年 (female Earth-Ox) 936 or 555 or −217 |
Year 809 (DCCCIX) was a common year starting on Monday (link will display the full calendar) of the Julian calendar, the 809th year of the Common Era (CE) and Anno Domini (AD) designations, the 809th year of the 1st millennium, the 9th year of the 9th century, and the 10th and last year of the 800s decade.