| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century BC – 1st century – 2nd century |
| Decades: | 0s 10s 20s – 30s – 40s 50s 60s |
| Years: | 27 28 29 – 30 – 31 32 33 |
| 30 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 30 XXX |
| Ab urbe condita | 783 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1814 – -1813 |
| Bengali calendar | -563 |
| Berber calendar | 980 |
| Buddhist calendar | 574 |
| Burmese calendar | -608 |
| Byzantine calendar | 5538 – 5539 |
| Chinese calendar | 己丑年十一月初八日 (2666/2726-11-8) — to —
庚寅年十一月十八日(2667/2727-11-18) |
| Coptic calendar | -254 – -253 |
| Ethiopian calendar | 22 – 23 |
| Hebrew calendar | 3790 – 3791 |
| Hindu calendars | |
| - Bikram Samwat | 86 – 87 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3131 – 3132 |
| Holocene calendar | 10030 |
| Iranian calendar | 592 BP – 591 BP |
| Islamic calendar | 610 BH – 609 BH |
| Japanese calendar | |
| Korean calendar | 2363 |
| Thai solar calendar | 573 |
Year 30 (XXX) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar.