For the area code see Area code 204. For the car see Peugeot 204.
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 2nd century – 3rd century – 4th century |
| Decades: | 170s 180s 190s – 200s – 210s 220s 230s |
| Years: | 201 202 203 – 204 – 205 206 207 |
| 204 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 204 CCIV |
| Ab urbe condita | 957 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1640 – -1639 |
| Bengali calendar | -389 |
| Berber calendar | 1154 |
| Buddhist calendar | 748 |
| Burmese calendar | -434 |
| Byzantine calendar | 5712 – 5713 |
| Chinese calendar | 癸未年十一月十二日 (2840/2900-11-12) — to —
甲申年十一月廿二日(2841/2901-11-22) |
| Coptic calendar | -80 – -79 |
| Ethiopian calendar | 196 – 197 |
| Hebrew calendar | 3964 – 3965 |
| Hindu calendars | |
| - Bikram Samwat | 260 – 261 |
| - Shaka Samvat | 126 – 127 |
| - Kali Yuga | 3305 – 3306 |
| Holocene calendar | 10204 |
| Iranian calendar | 418 BP – 417 BP |
| Islamic calendar | 431 BH – 430 BH |
| Japanese calendar | |
| Korean calendar | 2537 |
| Thai solar calendar | 747 |