| Millennium: | 1st millennium |
|---|---|
| Centuries: | 9th century – 10th century – 11th century |
| Decades: | 870s 880s 890s – 900s – 910s 920s 930s |
| Years: | 900 901 902 – 903 – 904 905 906 |
| 903 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 903 CMIII |
| Ab urbe condita | 1656 |
| Armenian calendar | 352 ԹՎ ՅԾԲ |
| Assyrian calendar | 5653 |
| Bahá'í calendar | -941–-940 |
| Bengali calendar | 310 |
| Berber calendar | 1853 |
| English Regnal year | N/A |
| Buddhist calendar | 1447 |
| Burmese calendar | 265 |
| Byzantine calendar | 6411–6412 |
| Chinese calendar | 壬戌年十一月三十日 (3539/3599-11-30) — to —
癸亥年十二月初十日(3540/3600-12-10) |
| Coptic calendar | 619–620 |
| Ethiopian calendar | 895–896 |
| Hebrew calendar | 4663–4664 |
| Hindu calendars | |
| - Vikram Samvat | 959–960 |
| - Shaka Samvat | 825–826 |
| - Kali Yuga | 4004–4005 |
| Holocene calendar | 10903 |
| Iranian calendar | 281–282 |
| Islamic calendar | 290–291 |
| Japanese calendar | |
| Korean calendar | 3236 |
| Minguo calendar | 1009 before ROC 民前1009年 |
| Thai solar calendar | 1446 |
Year 903 (CMIII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.