| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century BC – 1st century – 2nd century |
| Decades: | 20s BC 10s BC 0s BC – 0s – 10s 20s 30s |
| Years: | 1 BC 1 AD 2 AD – 3 AD – 4 AD 5 AD 6 AD |
| 3 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 3 III |
| Ab urbe condita | 756 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1841 – -1840 |
| Bengali calendar | -590 |
| Berber calendar | 953 |
| Buddhist calendar | 547 |
| Burmese calendar | -635 |
| Byzantine calendar | 5511 – 5512 |
| Chinese calendar | 壬戌年 (2639/2699) — to —
癸亥年(2640/2700) |
| Coptic calendar | -281 – -280 |
| Ethiopian calendar | -5 – -4 |
| Hebrew calendar | 3763 – 3764 |
| Hindu calendars | |
| - Bikram Samwat | 59 – 60 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3104 – 3105 |
| Holocene calendar | 10003 |
| Iranian calendar | 619 BP – 618 BP |
| Islamic calendar | 638 BH – 637 BH |
| Japanese calendar | |
| Korean calendar | 2336 |
| Thai solar calendar | 546 |
Year 3 (III) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.