| Millennium: | 1st millennium BC |
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| 502 BC by topic |
| Politics |
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| Gregorian calendar | 502 BC DII BC |
| Ab urbe condita | 252 |
| Ancient Egypt era | XXVII dynasty, 24 |
| - Pharaoh | Darius I of Persia, 20 |
| Ancient Greek era | 69th Olympiad, year 3 |
| Assyrian calendar | 4249 |
| Balinese saka calendar | N/A |
| Bengali calendar | −1094 |
| Berber calendar | 449 |
| Buddhist calendar | 43 |
| Burmese calendar | −1139 |
| Byzantine calendar | 5007–5008 |
| Chinese calendar | 戊戌年 (Earth Dog) 2196 or 1989 — to — 己亥年 (Earth Pig) 2197 or 1990 |
| Coptic calendar | −785 – −784 |
| Discordian calendar | 665 |
| Ethiopian calendar | −509 – −508 |
| Hebrew calendar | 3259–3260 |
| Hindu calendars | |
| - Vikram Samvat | −445 – −444 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2599–2600 |
| Holocene calendar | 9499 |
| Iranian calendar | 1123 BP – 1122 BP |
| Islamic calendar | 1158 BH – 1156 BH |
| Javanese calendar | N/A |
| Julian calendar | N/A |
| Korean calendar | 1832 |
| Minguo calendar | 2413 before ROC 民前2413年 |
| Nanakshahi calendar | −1969 |
| Thai solar calendar | 41–42 |
| Tibetan calendar | 阳土狗年 (male Earth-Dog) −375 or −756 or −1528 — to — 阴土猪年 (female Earth-Pig) −374 or −755 or −1527 |
The year 502 BC was a year of the pre-Julian Roman calendar. In the Roman Empire it was known as the Year of the Consulship of Tricostus and Viscellinus (or, less frequently, year 252 Ab urbe condita). The denomination 502 BC 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.
