33 BC

Millennium:	1st millennium BC
Centuries:	2nd century BC 1st century BC 1st century
Decades:	50s BC 40s BC 30s BC 20s BC 10s BC
Years:	36 BC 35 BC 34 BC 33 BC 32 BC 31 BC 30 BC

33 BC in various calendars

Gregorian calendar	33 BC XXXIII BC
Ab urbe condita	721
Ancient Egypt era	XXXIII dynasty, 291
- Pharaoh	Cleopatra VII, 19
Ancient Greek era	186th Olympiad, year 4
Assyrian calendar	4718
Balinese saka calendar	N/A
Bengali calendar	−625
Berber calendar	918
Buddhist calendar	512
Burmese calendar	−670
Byzantine calendar	5476–5477
Chinese calendar	丁亥年 (Fire Pig) 2665 or 2458     — to — 戊子年 (Earth Rat) 2666 or 2459
Coptic calendar	−316 – −315
Discordian calendar	1134
Ethiopian calendar	−40 – −39
Hebrew calendar	3728–3729
Hindu calendars
- Vikram Samvat	24–25
- Shaka Samvat	N/A
- Kali Yuga	3068–3069
Holocene calendar	9968
Iranian calendar	654 BP – 653 BP
Islamic calendar	674 BH – 673 BH
Javanese calendar	N/A
Julian calendar	33 BC XXXIII BC
Korean calendar	2301
Minguo calendar	1944 before ROC 民前1944年
Nanakshahi calendar	−1500
Seleucid era	279/280 AG
Thai solar calendar	510–511
Tibetan calendar	阴火猪年 (female Fire-Pig) 94 or −287 or −1059     — to — 阳土鼠年 (male Earth-Rat) 95 or −286 or −1058

Year 33 BC was either a common year starting on Saturday, Sunday or Monday or a leap year starting on Sunday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a leap year starting on Saturday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Octavian and Tullus (or, less frequently, year 721 Ab urbe condita). The denomination 33 BC 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.

Events

By place

Roman Republic

• Gaius Julius Caesar Octavian becomes consul for the second time. His partner is Lucius Volcatius Tullus. Octavian delivers a speech; de summa Republica in the Roman Senate, in which he subjects the Donations.
• The second term of the Second Triumvirate expires.
• Marcus Vipsanius Agrippa is self demoted to Aedile, and builds the Aqua Julia, one of the aqueducts on which Rome's water supply depends, as well as cleaning the Cloaca Maxima sewerage system.
• Mark Antony annexes the kingdom of Media and arranges the marriage of his son Alexander Helios with princess Iotapa, the daughter of king Artavasdes I.
• The Kinambroi surrender to Octavian.

China

• Crown Prince Ao ascends to the throne as Emperor Cheng of Han of the Han dynasty (until 7 BC).

Deaths

• July 8 – Yuan of Han, Chinese emperor of the Han dynasty (b. 75 BC)
• Tiberius Claudius Nero, Roman politician and father of Tiberius (b. 85 BC)