| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1004 by topic |
|---|
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Gregorian calendar | 1004 MIV |
| Ab urbe condita | 1757 |
| Armenian calendar | 453 ԹՎ ՆԾԳ |
| Assyrian calendar | 5754 |
| Balinese saka calendar | 925–926 |
| Bengali calendar | 411 |
| Berber calendar | 1954 |
| English Regnal year | N/A |
| Buddhist calendar | 1548 |
| Burmese calendar | 366 |
| Byzantine calendar | 6512–6513 |
| Chinese calendar | 癸卯年 (Water Rabbit) 3701 or 3494 — to — 甲辰年 (Wood Dragon) 3702 or 3495 |
| Coptic calendar | 720–721 |
| Discordian calendar | 2170 |
| Ethiopian calendar | 996–997 |
| Hebrew calendar | 4764–4765 |
| Hindu calendars | |
| - Vikram Samvat | 1060–1061 |
| - Shaka Samvat | 925–926 |
| - Kali Yuga | 4104–4105 |
| Holocene calendar | 11004 |
| Igbo calendar | 4–5 |
| Iranian calendar | 382–383 |
| Islamic calendar | 394–395 |
| Japanese calendar | Chōhō 6 / Kankō 1 (寛弘元年) |
| Javanese calendar | 906–907 |
| Julian calendar | 1004 MIV |
| Korean calendar | 3337 |
| Minguo calendar | 908 before ROC 民前908年 |
| Nanakshahi calendar | −464 |
| Seleucid era | 1315/1316 AG |
| Thai solar calendar | 1546–1547 |
| Tibetan calendar | 阴水兔年 (female Water-Rabbit) 1130 or 749 or −23 — to — 阳木龙年 (male Wood-Dragon) 1131 or 750 or −22 |
Year 1000000 (MIV) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar.