| Centuries: | 6th century · 7th century · 8th century |
| Decades: | 620s 630s 640s 650s 660s 670s 680s |
| Years: | 654 655 656 657 658 659 660 |
| 657 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 657 DCLVII |
| Ab urbe condita | 1410 |
| Armenian calendar | 106 ԹՎ ՃԶ |
| Bahá'í calendar | -1187 – -1186 |
| Bengali calendar | 64 |
| Berber calendar | 1607 |
| Buddhist calendar | 1201 |
| Burmese calendar | 19 |
| Byzantine calendar | 6165 – 6166 |
| Chinese calendar | 丙辰年十二月十一日 (3293/3353-12-11) — to —
丁巳年十一月廿一日(3294/3354-11-21) |
| Coptic calendar | 373 – 374 |
| Ethiopian calendar | 649 – 650 |
| Hebrew calendar | 4417 – 4418 |
| Hindu calendars | |
| - Bikram Samwat | 713 – 714 |
| - Shaka Samvat | 579 – 580 |
| - Kali Yuga | 3758 – 3759 |
| Holocene calendar | 10657 |
| Iranian calendar | 35 – 36 |
| Islamic calendar | 36 – 37 |
| Japanese calendar | |
| Korean calendar | 2990 |
| Thai solar calendar | 1200 |
657 was a year of the 7th century.