| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 663 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 663 DCLXIII |
| Ab urbe condita | 1416 |
| Armenian calendar | 112 ԹՎ ՃԺԲ |
| Assyrian calendar | 5413 |
| Balinese saka calendar | 584–585 |
| Bengali calendar | 70 |
| Berber calendar | 1613 |
| Buddhist calendar | 1207 |
| Burmese calendar | 25 |
| Byzantine calendar | 6171–6172 |
| Chinese calendar | 壬戌年 (Water Dog) 3360 or 3153 — to — 癸亥年 (Water Pig) 3361 or 3154 |
| Coptic calendar | 379–380 |
| Discordian calendar | 1829 |
| Ethiopian calendar | 655–656 |
| Hebrew calendar | 4423–4424 |
| Hindu calendars | |
| - Vikram Samvat | 719–720 |
| - Shaka Samvat | 584–585 |
| - Kali Yuga | 3763–3764 |
| Holocene calendar | 10663 |
| Iranian calendar | 41–42 |
| Islamic calendar | 42–43 |
| Japanese calendar | Hakuchi 14 (白雉１４年) |
| Javanese calendar | 554–555 |
| Julian calendar | 663 DCLXIII |
| Korean calendar | 2996 |
| Minguo calendar | 1249 before ROC 民前1249年 |
| Nanakshahi calendar | −805 |
| Seleucid era | 974/975 AG |
| Thai solar calendar | 1205–1206 |
| Tibetan calendar | 阳水狗年 (male Water-Dog) 789 or 408 or −364 — to — 阴水猪年 (female Water-Pig) 790 or 409 or −363 |
Year 663 (DCLXIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 663 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.