| Millennium: | 1st millennium |
|---|---|
| Centuries: | 4th century – 5th century – 6th century |
| Decades: | 410s 420s 430s – 440s – 450s 460s 470s |
| Years: | 437 438 439 – 440 – 441 442 443 |
| 440 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 440 CDXL |
| Ab urbe condita | 1193 |
| Armenian calendar | N/A |
| Assyrian calendar | 5190 |
| Bahá'í calendar | -1404–-1403 |
| Bengali calendar | -153 |
| Berber calendar | 1390 |
| English Regnal year | N/A |
| Buddhist calendar | 984 |
| Burmese calendar | -198 |
| Byzantine calendar | 5948–5949 |
| Chinese calendar | 己卯年十一月十一日 (3076/3136-11-11) — to —
庚辰年十一月廿二日(3077/3137-11-22) |
| Coptic calendar | 156–157 |
| Ethiopian calendar | 432–433 |
| Hebrew calendar | 4200–4201 |
| Hindu calendars | |
| - Vikram Samvat | 496–497 |
| - Shaka Samvat | 362–363 |
| - Kali Yuga | 3541–3542 |
| Holocene calendar | 10440 |
| Iranian calendar | 182 BP – 181 BP |
| Islamic calendar | 188 BH – 187 BH |
| Japanese calendar | |
| Korean calendar | 2773 |
| Minguo calendar | 1472 before ROC 民前1472年 |
| Thai solar calendar | 983 |
Year 440 (CDXL) was a leap 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 Valentinianus and Anatolius (or, less frequently, year 1193 Ab urbe condita). The denomination 440 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.