| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 503 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 503 DIII |
| Ab urbe condita | 1256 |
| Assyrian calendar | 5253 |
| Balinese saka calendar | 424–425 |
| Bengali calendar | −90 |
| Berber calendar | 1453 |
| Buddhist calendar | 1047 |
| Burmese calendar | −135 |
| Byzantine calendar | 6011–6012 |
| Chinese calendar | 壬午年 (Water Horse) 3200 or 2993 — to — 癸未年 (Water Goat) 3201 or 2994 |
| Coptic calendar | 219–220 |
| Discordian calendar | 1669 |
| Ethiopian calendar | 495–496 |
| Hebrew calendar | 4263–4264 |
| Hindu calendars | |
| - Vikram Samvat | 559–560 |
| - Shaka Samvat | 424–425 |
| - Kali Yuga | 3603–3604 |
| Holocene calendar | 10503 |
| Iranian calendar | 119 BP – 118 BP |
| Islamic calendar | 123 BH – 122 BH |
| Javanese calendar | 389–390 |
| Julian calendar | 503 DIII |
| Korean calendar | 2836 |
| Minguo calendar | 1409 before ROC 民前1409年 |
| Nanakshahi calendar | −965 |
| Seleucid era | 814/815 AG |
| Thai solar calendar | 1045–1046 |
| Tibetan calendar | 阳水马年 (male Water-Horse) 629 or 248 or −524 — to — 阴水羊年 (female Water-Goat) 630 or 249 or −523 |
Year 503 (DIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Volusianus and Dexicrates (or, less frequently, year 1256 Ab urbe condita). The denomination 503 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.