| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 10th century – 11th century – 12th century |
| Decades: | 970s 980s 990s – 1000s – 1010s 1020s 1030s |
| Years: | 1000 1001 1002 – 1003 – 1004 1005 1006 |
| 1003 by topic | |
| Lists of leaders | |
| State leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 1003 MIII |
| Ab urbe condita | 1756 |
| Armenian calendar | 452 ԹՎ ՆԾԲ |
| Assyrian calendar | 5753 |
| Bahá'í calendar | -841–-840 |
| Bengali calendar | 410 |
| Berber calendar | 1953 |
| English Regnal year | N/A |
| Buddhist calendar | 1547 |
| Burmese calendar | 365 |
| Byzantine calendar | 6511–6512 |
| Chinese calendar | 壬寅年十一月廿六日 (3639/3699-11-26) — to —
癸卯年十二月初六日(3640/3700-12-6) |
| Coptic calendar | 719–720 |
| Ethiopian calendar | 995–996 |
| Hebrew calendar | 4763–4764 |
| Hindu calendars | |
| - Vikram Samvat | 1059–1060 |
| - Shaka Samvat | 925–926 |
| - Kali Yuga | 4104–4105 |
| Holocene calendar | 11003 |
| Iranian calendar | 381–382 |
| Islamic calendar | 393–394 |
| Japanese calendar | |
| Korean calendar | 3336 |
| Minguo calendar | 909 before ROC 民前909年 |
| Thai solar calendar | 1546 |
Year 1003 (MIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.