| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1503 by topic |
|---|
| Arts and science |
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Works category |
| Gregorian calendar | 1503 MDIII |
| Ab urbe condita | 2256 |
| Armenian calendar | 952 ԹՎ ՋԾԲ |
| Assyrian calendar | 6253 |
| Balinese saka calendar | 1424–1425 |
| Bengali calendar | 910 |
| Berber calendar | 2453 |
| English Regnal year | 18 Hen. 7 – 19 Hen. 7 |
| Buddhist calendar | 2047 |
| Burmese calendar | 865 |
| Byzantine calendar | 7011–7012 |
| Chinese calendar | 壬戌年 (Water Dog) 4200 or 3993 — to — 癸亥年 (Water Pig) 4201 or 3994 |
| Coptic calendar | 1219–1220 |
| Discordian calendar | 2669 |
| Ethiopian calendar | 1495–1496 |
| Hebrew calendar | 5263–5264 |
| Hindu calendars | |
| - Vikram Samvat | 1559–1560 |
| - Shaka Samvat | 1424–1425 |
| - Kali Yuga | 4603–4604 |
| Holocene calendar | 11503 |
| Igbo calendar | 503–504 |
| Iranian calendar | 881–882 |
| Islamic calendar | 908–909 |
| Japanese calendar | Bunki 3 (文亀３年) |
| Javanese calendar | 1420–1421 |
| Julian calendar | 1503 MDIII |
| Korean calendar | 3836 |
| Minguo calendar | 409 before ROC 民前409年 |
| Nanakshahi calendar | 35 |
| Thai solar calendar | 2045–2046 |
| Tibetan calendar | 阳水狗年 (male Water-Dog) 1629 or 1248 or 476 — to — 阴水猪年 (female Water-Pig) 1630 or 1249 or 477 |
Year 1503 (MDIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar.