| Centuries: | 4th century · 5th century · 6th century |
| Decades: | 390s 400s 410s 420s 430s 440s 450s |
| Years: | 419 420 421 422 423 424 425 |
| 422 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 422 CDXXII |
| Ab urbe condita | 1175 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1422 – -1421 |
| Bengali calendar | -171 |
| Berber calendar | 1372 |
| Buddhist calendar | 966 |
| Burmese calendar | -216 |
| Byzantine calendar | 5930 – 5931 |
| Chinese calendar | 辛酉年十一月廿三日 (3058/3118-11-23) — to —
壬戌年十二月初三日(3059/3119-12-3) |
| Coptic calendar | 138 – 139 |
| Ethiopian calendar | 414 – 415 |
| Hebrew calendar | 4182 – 4183 |
| Hindu calendars | |
| - Bikram Samwat | 478 – 479 |
| - Shaka Samvat | 344 – 345 |
| - Kali Yuga | 3523 – 3524 |
| Holocene calendar | 10422 |
| Iranian calendar | 200 BP – 199 BP |
| Islamic calendar | 206 BH – 205 BH |
| Japanese calendar | |
| Korean calendar | 2755 |
| Thai solar calendar | 965 |