| Millennium: | 2nd Millennium BC |
|---|---|
| Centuries: | 21st cent. BC – 20th cent. BC – 19th cent. BC |
| Decades: | 2010s BC 2000s BC 1990s BC – 1980s BC – 1970s BC 1960s BC 1950s BC |
| Years: | 1989 BC 1988 BC 1987 BC – 1986 BC – 1985 BC 1984 BC 1983 BC |
| Gregorian calendar | 1986 MCMLXXXVI |
| Ab urbe condita | 2739 |
| Armenian calendar | 1435 ԹՎ ՌՆԼԵ |
| Assyrian calendar | 6736 |
| Bahá'í calendar | 142–143 |
| Bengali calendar | 1393 |
| Berber calendar | 2936 |
| British Regnal year | 34 Eliz. 2 – 35 Eliz. 2 |
| Buddhist calendar | 2530 |
| Burmese calendar | 1348 |
| Byzantine calendar | 7494–7495 |
| Chinese calendar | 乙丑年 (Wood Ox) 4682 or 4622 — to — 丙寅年 (Fire Tiger) 4683 or 4623 |
| Coptic calendar | 1702–1703 |
| Discordian calendar | 3152 |
| Ethiopian calendar | 1978–1979 |
| Hebrew calendar | 5746–5747 |
| Hindu calendars | |
| - Vikram Samvat | 2042–2043 |
| - Shaka Samvat | 1907–1908 |
| - Kali Yuga | 5086–5087 |
| Holocene calendar | 11986 |
| Igbo calendar | 986–987 |
| Iranian calendar | 1364–1365 |
| Islamic calendar | 1406–1407 |
| Japanese calendar | Shōwa 61 (昭和６１年) |
| Javanese calendar | 1918–1919 |
| Juche calendar | 75 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4319 |
| Minguo calendar | ROC 75 民國75年 |
| Nanakshahi calendar | 518 |
| Thai solar calendar | 2529 |
| Unix time | 504921600–536457599 |
The year 1986 BC