340
| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 340 CCCXL |
| Ab urbe condita | 1093 |
| Assyrian calendar | 5090 |
| Balinese saka calendar | 261–262 |
| Bengali calendar | −253 |
| Berber calendar | 1290 |
| Buddhist calendar | 884 |
| Burmese calendar | −298 |
| Byzantine calendar | 5848–5849 |
| Chinese calendar |
己亥年 (Earth Pig) 3036 or 2976 — to — 庚子年 (Metal Rat) 3037 or 2977 |
| Coptic calendar | 56–57 |
| Discordian calendar | 1506 |
| Ethiopian calendar | 332–333 |
| Hebrew calendar | 4100–4101 |
| Hindu calendars | |
| - Vikram Samvat | 396–397 |
| - Shaka Samvat | 261–262 |
| - Kali Yuga | 3440–3441 |
| Holocene calendar | 10340 |
| Iranian calendar | 282 BP – 281 BP |
| Islamic calendar | 291 BH – 290 BH |
| Javanese calendar | 221–222 |
| Julian calendar | 340 CCCXL |
| Korean calendar | 2673 |
| Minguo calendar | 1572 before ROC 民前1572年 |
| Nanakshahi calendar | −1128 |
| Seleucid era | 651/652 AG |
| Thai solar calendar | 882–883 |
| Tibetan calendar | 阴土猪年 (female Earth-Pig) 466 or 85 or −687 — to — 阳金鼠年 (male Iron-Rat) 467 or 86 or −686 |
Year 340 (CCCXL) was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Acindynus and Valerius (or, less frequently, year 1093 Ab urbe condita). The denomination 340 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.
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