|Millennium:||1st millennium BC|
|Centuries:||2nd century BC – 1st century BC – 1st century|
|Decades:||60s BC 50s BC 40s BC – 30s BC – 20s BC 10s BC 0s BC|
|Years:||33 BC 32 BC 31 BC – 30 BC – 29 BC 28 BC 27 BC|
|30 BC by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Gregorian calendar||30 BC
|Ab urbe condita||724|
|English Regnal year||N/A|
— to —辛卯年
|- Vikram Samvat||27–28|
|- Shaka Samvat||N/A|
|- Kali Yuga||3072–3073|
|Iranian calendar||651 BP – 650 BP|
|Islamic calendar||671 BH – 670 BH|
|Minguo calendar||1941 before ROC
|Thai solar calendar||514|
|Wikimedia Commons has media related to: 30 BC|
The year 30 BC was either a common year starting on Wednesday, Thursday or Friday or a leap year starting on Thursday (the link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information). It was a common year starting on Wednesday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Octavian and Crassus (or, less often, year 724 Ab urbe condita). The name 30 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the most common method in Europe for giving names to years.
By place [change]
Roman Republic [change]
- Gaius Julius Caesar Octavian becomes Roman Consul for the fourth time. His partner is Marcus Licinius Crassus the Younger.
- Spring – Octavian leads his army to the Dardanelles; he take his soldiers to Asia Minor and marches into Syria, where Herod the Great sends him vows of loyalty and thousands of his own troops to help.
- Summer – Gaius Cornelius Gallus arrives in Cyrene and occupies Paraetonium. Mark Antony storms the city walls and blockades the harbour.
- Antony retreats his army (7 legions) to Egypt and learns that Pelusium has opened its gates to Octavian without resistance.
- August 1 – Octavian Caesar captures Alexandria. This marks the official annexation of Ancient Egypt to the Roman Republic.
- Cleopatra evacuates her court and treasury to Berenice on the west coast of the Red Sea, but king Malchus of Nabatea attacks from the desert and burns the Egyptian ships.
- The children of Cleopatra are spared by Octavian and taken back in triumph; Octavia Minor raises Alexander Helios, Cleopatra Selene and Ptolemy Philadelphus in her house in Rome.
- With the suicide of Cleopatra VII of Egypt and the execution of Ptolemy XV Caesarion the Ptolemaic dynasty, the last dynasty of Ancient Egypt ends. It is the first year of Octavian's reign in Egypt.
- Octavian claims Cleopatra's treasure in the mausoleum at the Temple of Isis; he pays the salaries of his veteran legionaries and gives them land in Italy.
- First possible date for the invention of the wheelbarrow; as the 5th century Book of Later Han states, the wife of the once poor and youthful imperial censor Bao Xuan of the Chinese Han Dynasty helped him push a lu che back to his village during their feeble wedding ceremony, around this year.
- August 1
- August 12 – Cleopatra VII, last queen of Ptolemaic Egypt (suicide) (b. 69 BC)
- August 23 – Ptolemy Caesar, son of Julius Caesar and pharaoh of Egypt (b. 47 BC)
- Hyrcanus II, king and high priest of Judea until 40 BC