| Millennium: | 1st millennium |
|---|---|
| Centuries: | 3rd century – 4th century – 5th century |
| Decades: | 270s 280s 290s – 300s – 310s 320s 330s |
| Years: | 305 306 307 – 308 – 309 310 311 |
| 308 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 308 CCCVIII |
| Ab urbe condita | 1061 |
| Armenian calendar | N/A |
| Assyrian calendar | 5058 |
| Bahá'í calendar | -1536–-1535 |
| Bengali calendar | -285 |
| Berber calendar | 1258 |
| English Regnal year | N/A |
| Buddhist calendar | 852 |
| Burmese calendar | -330 |
| Byzantine calendar | 5816–5817 |
| Chinese calendar | 丁卯年十一月廿二日 (2944/3004-11-22) — to —
戊辰年十二月初三日(2945/3005-12-3) |
| Coptic calendar | 24–25 |
| Ethiopian calendar | 300–301 |
| Hebrew calendar | 4068–4069 |
| Hindu calendars | |
| - Vikram Samvat | 364–365 |
| - Shaka Samvat | 230–231 |
| - Kali Yuga | 3409–3410 |
| Holocene calendar | 10308 |
| Iranian calendar | 314 BP – 313 BP |
| Islamic calendar | 324 BH – 323 BH |
| Japanese calendar | |
| Korean calendar | 2641 |
| Minguo calendar | 1604 before ROC 民前1604年 |
| Thai solar calendar | 851 |
Year 308 (CCCVIII) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerius and Valerius (or, less frequently, year 1061 Ab urbe condita). The denomination 308 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.