| Centuries: | 4th century · 5th century · 6th century |
| Decades: | 370s 380s 390s 400s 410s 420s 430s |
| Years: | 406 407 408 409 410 411 412 |
| 409 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 409 CDIX |
| Ab urbe condita | 1162 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1435 – -1434 |
| Bengali calendar | -184 |
| Berber calendar | 1359 |
| Buddhist calendar | 953 |
| Burmese calendar | -229 |
| Byzantine calendar | 5917 – 5918 |
| Chinese calendar | 戊申年十一月廿九日 (3045/3105-11-29) — to —
己酉年十一月初九日(3046/3106-11-9) |
| Coptic calendar | 125 – 126 |
| Ethiopian calendar | 401 – 402 |
| Hebrew calendar | 4169 – 4170 |
| Hindu calendars | |
| - Bikram Samwat | 465 – 466 |
| - Shaka Samvat | 331 – 332 |
| - Kali Yuga | 3510 – 3511 |
| Holocene calendar | 10409 |
| Iranian calendar | 213 BP – 212 BP |
| Islamic calendar | 220 BH – 219 BH |
| Japanese calendar | |
| Korean calendar | 2742 |
| Thai solar calendar | 952 |