| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 784 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 784 DCCLXXXIV |
| Ab urbe condita | 1537 |
| Armenian calendar | 233 ԹՎ ՄԼԳ |
| Assyrian calendar | 5534 |
| Balinese saka calendar | 705–706 |
| Bengali calendar | 191 |
| Berber calendar | 1734 |
| Buddhist calendar | 1328 |
| Burmese calendar | 146 |
| Byzantine calendar | 6292–6293 |
| Chinese calendar | 癸亥年 (Water Pig) 3481 or 3274 — to — 甲子年 (Wood Rat) 3482 or 3275 |
| Coptic calendar | 500–501 |
| Discordian calendar | 1950 |
| Ethiopian calendar | 776–777 |
| Hebrew calendar | 4544–4545 |
| Hindu calendars | |
| - Vikram Samvat | 840–841 |
| - Shaka Samvat | 705–706 |
| - Kali Yuga | 3884–3885 |
| Holocene calendar | 10784 |
| Iranian calendar | 162–163 |
| Islamic calendar | 167–168 |
| Japanese calendar | Enryaku 3 (延暦３年) |
| Javanese calendar | 679–680 |
| Julian calendar | 784 DCCLXXXIV |
| Korean calendar | 3117 |
| Minguo calendar | 1128 before ROC 民前1128年 |
| Nanakshahi calendar | −684 |
| Seleucid era | 1095/1096 AG |
| Thai solar calendar | 1326–1327 |
| Tibetan calendar | 阴水猪年 (female Water-Pig) 910 or 529 or −243 — to — 阳木鼠年 (male Wood-Rat) 911 or 530 or −242 |
Year 784 (DCCLXXXIV) was a leap year starting on Thursday of the Julian calendar, the 784th year of the Common Era (CE) and Anno Domini (AD) designations, the 784th year of the 1st millennium, the 84th year of the 8th century, and the 5th year of the 780s decade. The denomination 784 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.