| Millennium: | 1st millennium |
|---|---|
| Centuries: | 4th century – 5th century – 6th century |
| Decades: | 370s 380s 390s – 400s – 410s 420s 430s |
| Years: | 402 403 404 – 405 – 406 407 408 |
| 405 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 405 CDV |
| Ab urbe condita | 1158 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1439 – -1438 |
| Bengali calendar | -188 |
| Berber calendar | 1355 |
| Buddhist calendar | 949 |
| Burmese calendar | -233 |
| Byzantine calendar | 5913 – 5914 |
| Chinese calendar | 甲辰年十一月十五日 (3041/3101-11-15) — to —
乙巳年十一月廿五日(3042/3102-11-25) |
| Coptic calendar | 121 – 122 |
| Ethiopian calendar | 397 – 398 |
| Hebrew calendar | 4165 – 4166 |
| Hindu calendars | |
| - Bikram Samwat | 461 – 462 |
| - Shaka Samvat | 327 – 328 |
| - Kali Yuga | 3506 – 3507 |
| Holocene calendar | 10405 |
| Iranian calendar | 217 BP – 216 BP |
| Islamic calendar | 224 BH – 223 BH |
| Japanese calendar | |
| Korean calendar | 2738 |
| Thai solar calendar | 948 |