| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 12th century – 13th century – 14th century |
| Decades: | 1170s 1180s 1190s – 1200s – 1210s 1220s 1230s |
| Years: | 1200 1201 1202 – 1203 – 1204 1205 1206 |
| 1203 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Art and literature | |
| 1203 in poetry | |
| Gregorian calendar | 1203 MCCIII |
| Ab urbe condita | 1956 |
| Armenian calendar | 652 ԹՎ ՈԾԲ |
| Assyrian calendar | 5953 |
| Bahá'í calendar | -641–-640 |
| Bengali calendar | 610 |
| Berber calendar | 2153 |
| English Regnal year | 4 Joh. 1 – 5 Joh. 1 |
| Buddhist calendar | 1747 |
| Burmese calendar | 565 |
| Byzantine calendar | 6711–6712 |
| Chinese calendar | 壬戌年十二月十七日 (3839/3899-12-17) — to —
癸亥年十一月廿七日(3840/3900-11-27) |
| Coptic calendar | 919–920 |
| Ethiopian calendar | 1195–1196 |
| Hebrew calendar | 4963–4964 |
| Hindu calendars | |
| - Vikram Samvat | 1259–1260 |
| - Shaka Samvat | 1125–1126 |
| - Kali Yuga | 4304–4305 |
| Holocene calendar | 11203 |
| Iranian calendar | 581–582 |
| Islamic calendar | 599–600 |
| Japanese calendar | |
| Korean calendar | 3536 |
| Minguo calendar | 709 before ROC 民前709年 |
| Thai solar calendar | 1746 |
Year 1203 (MCCIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.