| Millennium: | 1st Millennium BC |
|---|---|
| Centuries: | 7th cent. BC – 6th cent. BC – 5th cent. BC |
| Decades: | 580s BC 570s BC 560s BC – 550s BC – 540s BC 530s BC 520s BC |
| Years: | 553 BC 552 BC 551 BC – 550 BC – 549 BC 548 BC 547 BC |
| Gregorian calendar | 550 DL |
| Ab urbe condita | 1303 |
| Assyrian calendar | 5300 |
| Bengali calendar | −43 |
| Berber calendar | 1500 |
| Buddhist calendar | 1094 |
| Burmese calendar | −88 |
| Byzantine calendar | 6058–6059 |
| Chinese calendar | 己巳年 (Earth Snake) 3246 or 3186 — to — 庚午年 (Metal Horse) 3247 or 3187 |
| Coptic calendar | 266–267 |
| Discordian calendar | 1716 |
| Ethiopian calendar | 542–543 |
| Hebrew calendar | 4310–4311 |
| Hindu calendars | |
| - Vikram Samvat | 606–607 |
| - Shaka Samvat | 471–472 |
| - Kali Yuga | 3650–3651 |
| Holocene calendar | 10550 |
| Iranian calendar | 72 BP – 71 BP |
| Islamic calendar | 74 BH – 73 BH |
| Javanese calendar | 438–439 |
| Julian calendar | 550 DL |
| Korean calendar | 2883 |
| Minguo calendar | 1362 before ROC 民前1362年 |
| Nanakshahi calendar | −918 |
| Seleucid era | 861/862 AG |
| Thai solar calendar | 1092–1093 |
The year 550 BC