| Millennium: | 1st millennium |
|---|---|
| Centuries: | 6th century – 7th century – 8th century |
| Decades: | 630s 640s 650s – 660s – 670s 680s 690s |
| Years: | 662 663 664 – 665 – 666 667 668 |
| 665 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 665 DCLXV |
| Ab urbe condita | 1418 |
| Armenian calendar | 114 ԹՎ ՃԺԴ |
| Assyrian calendar | 5415 |
| Bahá'í calendar | -1179–-1178 |
| Bengali calendar | 72 |
| Berber calendar | 1615 |
| English Regnal year | N/A |
| Buddhist calendar | 1209 |
| Burmese calendar | 27 |
| Byzantine calendar | 6173–6174 |
| Chinese calendar | 甲子年十二月初十日 (3301/3361-12-10) — to —
乙丑年十一月十九日(3302/3362-11-19) |
| Coptic calendar | 381–382 |
| Ethiopian calendar | 657–658 |
| Hebrew calendar | 4425–4426 |
| Hindu calendars | |
| - Vikram Samvat | 721–722 |
| - Shaka Samvat | 587–588 |
| - Kali Yuga | 3766–3767 |
| Holocene calendar | 10665 |
| Iranian calendar | 43–44 |
| Islamic calendar | 44–45 |
| Japanese calendar | |
| Korean calendar | 2998 |
| Minguo calendar | 1247 before ROC 民前1247年 |
| Thai solar calendar | 1208 |
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.