|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|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||783|
|Chinese calendar||己丑年 (Earth Ox)
2726 or 2666
— to —
庚寅年 (Metal Tiger)
2727 or 2667
|Coptic calendar||−254 – −253|
|- Vikram Samvat||86–87|
|- Shaka Samvat||N/A|
|- Kali Yuga||3131–3132|
|Iranian calendar||592 BP – 591 BP|
|Islamic calendar||610 BH – 609 BH|
|Minguo calendar||1882 before ROC
|Seleucid era||341/342 AG|
|Thai solar calendar||572–573|
Year 30 (XXX) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Vinicius and Longinus (or, less frequently, year 783 Ab urbe condita). The denomination 30 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- The Kushan Empire is founded (approximate date).
- Phaedrus translates Aesop's fables, and composes some of his own.
- Velleius Paterculus writes the general history of the countries known in Antiquity.
- Judas Iscariot – disciple of Jesus, reportedly committed suicide shortly before the death of his teacher
- Shammai – president of the Sanhedrin and talmudic scholar (b. 50 BC)