| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | |
| Decades: | |
| Years: | |
| 634 BC by topic |
| Politics |
|---|
| Categories |
| Gregorian calendar | 634 BC DCXXXIV BC |
| Ab urbe condita | 120 |
| Ancient Egypt era | XXVI dynasty, 31 |
| - Pharaoh | Psamtik I, 31 |
| Ancient Greek era | 36th Olympiad, year 3 |
| Assyrian calendar | 4117 |
| Balinese saka calendar | N/A |
| Bengali calendar | −1227 – −1226 |
| Berber calendar | 317 |
| Buddhist calendar | −89 |
| Burmese calendar | −1271 |
| Byzantine calendar | 4875–4876 |
| Chinese calendar | 丙戌年 (Fire Dog) 2064 or 1857 — to — 丁亥年 (Fire Pig) 2065 or 1858 |
| Coptic calendar | −917 – −916 |
| Discordian calendar | 533 |
| Ethiopian calendar | −641 – −640 |
| Hebrew calendar | 3127–3128 |
| Hindu calendars | |
| - Vikram Samvat | −577 – −576 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2467–2468 |
| Holocene calendar | 9367 |
| Iranian calendar | 1255 BP – 1254 BP |
| Islamic calendar | 1294 BH – 1293 BH |
| Javanese calendar | N/A |
| Julian calendar | N/A |
| Korean calendar | 1700 |
| Minguo calendar | 2545 before ROC 民前2545年 |
| Nanakshahi calendar | −2101 |
| Thai solar calendar | −91 – −90 |
| Tibetan calendar | 阳火狗年 (male Fire-Dog) −507 or −888 or −1660 — to — 阴火猪年 (female Fire-Pig) −506 or −887 or −1659 |
The year 634 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 120 Ab urbe condita . The denomination 634 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.