| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 665 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 665 DCLXV |
| Ab urbe condita | 1418 |
| Armenian calendar | 114 ԹՎ ՃԺԴ |
| Assyrian calendar | 5415 |
| Balinese saka calendar | 586–587 |
| Bengali calendar | 72 |
| Berber calendar | 1615 |
| Buddhist calendar | 1209 |
| Burmese calendar | 27 |
| Byzantine calendar | 6173–6174 |
| Chinese calendar | 甲子年 (Wood Rat) 3362 or 3155 — to — 乙丑年 (Wood Ox) 3363 or 3156 |
| Coptic calendar | 381–382 |
| Discordian calendar | 1831 |
| Ethiopian calendar | 657–658 |
| Hebrew calendar | 4425–4426 |
| Hindu calendars | |
| - Vikram Samvat | 721–722 |
| - Shaka Samvat | 586–587 |
| - Kali Yuga | 3765–3766 |
| Holocene calendar | 10665 |
| Iranian calendar | 43–44 |
| Islamic calendar | 44–45 |
| Japanese calendar | Hakuchi 16 (白雉１６年) |
| Javanese calendar | 556–557 |
| Julian calendar | 665 DCLXV |
| Korean calendar | 2998 |
| Minguo calendar | 1247 before ROC 民前1247年 |
| Nanakshahi calendar | −803 |
| Seleucid era | 976/977 AG |
| Thai solar calendar | 1207–1208 |
| Tibetan calendar | 阳木鼠年 (male Wood-Rat) 791 or 410 or −362 — to — 阴木牛年 (female Wood-Ox) 792 or 411 or −361 |
Year 665 (DCLXV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. The denomination 665 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.