| Millennium: | 1st millennium |
|---|---|
| Centuries: | 4th century – 5th century – 6th century |
| Decades: | 400s 410s 420s – 430s – 440s 450s 460s |
| Years: | 431 432 433 – 434 – 435 436 437 |
| 434 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 434 CDXXXIV |
| Ab urbe condita | 1187 |
| Armenian calendar | N/A |
| Assyrian calendar | 5184 |
| Bahá'í calendar | -1410–-1409 |
| Bengali calendar | -159 |
| Berber calendar | 1384 |
| English Regnal year | N/A |
| Buddhist calendar | 978 |
| Burmese calendar | -204 |
| Byzantine calendar | 5942–5943 |
| Chinese calendar | 癸酉年十二月初六日 (3070/3130-12-6) — to —
甲戌年十一月十五日(3071/3131-11-15) |
| Coptic calendar | 150–151 |
| Ethiopian calendar | 426–427 |
| Hebrew calendar | 4194–4195 |
| Hindu calendars | |
| - Vikram Samvat | 490–491 |
| - Shaka Samvat | 356–357 |
| - Kali Yuga | 3535–3536 |
| Holocene calendar | 10434 |
| Iranian calendar | 188 BP – 187 BP |
| Islamic calendar | 194 BH – 193 BH |
| Japanese calendar | |
| Korean calendar | 2767 |
| Minguo calendar | 1478 before ROC 民前1478年 |
| Thai solar calendar | 977 |
Year 434 (CDXXXIV) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Aspar and Areobindus (or, less frequently, year 1187 Ab urbe condita). The denomination 434 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.