| Centuries: | 9th century - 10th century - 11th century |
| Decades: | 940s 950s 960s - 970s - 980s 990s 1000s |
| Years: | 974 975 976 - 977 - 978 979 980 |
| 977 by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishment and disestablishment categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 977 CMLXXVII |
| Ab urbe condita | 1730 |
| Armenian calendar | 426 ԹՎ ՆԻԶ |
| Bahá'í calendar | -867 – -866 |
| Berber calendar | 1927 |
| Buddhist calendar | 1521 |
| Burmese calendar | 339 |
| Chinese calendar | 3613/3673-12-9 (丙子年十二月初九日) — to —
3614/3674-11-19(丁丑年十一月十九日) |
| Coptic calendar | 693 – 694 |
| Ethiopian calendar | 969 – 970 |
| Hebrew calendar | 4737 – 4738 |
| Hindu calendars | |
| - Vikram Samvat | 1032 – 1033 |
| - Shaka Samvat | 899 – 900 |
| - Kali Yuga | 4078 – 4079 |
| Holocene calendar | 10977 |
| Iranian calendar | 355 – 356 |
| Islamic calendar | 366 – 367 |
| Japanese calendar | |
| Korean calendar | 3310 |
| Thai solar calendar | 1520 |