54 BC

Millennium:	1st millennium BC
Centuries:	2nd century BC 1st century BC 1st century
Decades:	70s BC 60s BC 50s BC 40s BC 30s BC
Years:	57 BC 56 BC 55 BC 54 BC 53 BC 52 BC 51 BC

54 BC in various calendars

Gregorian calendar	54 BC LIV BC
Ab urbe condita	700
Ancient Egypt era	XXXIII dynasty, 270
- Pharaoh	Ptolemy XII Auletes, 27
Ancient Greek era	181st Olympiad, year 3
Assyrian calendar	4697
Balinese saka calendar	N/A
Bengali calendar	−646
Berber calendar	897
Buddhist calendar	491
Burmese calendar	−691
Byzantine calendar	5455–5456
Chinese calendar	丙寅年 (Fire Tiger) 2644 or 2437     — to — 丁卯年 (Fire Rabbit) 2645 or 2438
Coptic calendar	−337 – −336
Discordian calendar	1113
Ethiopian calendar	−61 – −60
Hebrew calendar	3707–3708
Hindu calendars
- Vikram Samvat	3–4
- Shaka Samvat	N/A
- Kali Yuga	3047–3048
Holocene calendar	9947
Iranian calendar	675 BP – 674 BP
Islamic calendar	696 BH – 695 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2280
Minguo calendar	1965 before ROC 民前1965年
Nanakshahi calendar	−1521
Seleucid era	258/259 AG
Thai solar calendar	489–490
Tibetan calendar	阳火虎年 (male Fire-Tiger) 73 or −308 or −1080     — to — 阴火兔年 (female Fire-Rabbit) 74 or −307 or −1079

Year 54 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Appius and Ahenobarbus (or, less frequently, year 700 Ab urbe condita). The denomination 54 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

• Consuls: Appius Claudius Pulcher and Lucius Domitius Ahenobarbus.
• Fifth year of Julius Caesar's Gallic Wars:
  • July – Second of Caesar's Invasions of Britain: Julius Caesar receives nominal submission from the tribal chief Cassivellaunus and installs Mandubracius as a friendly king.
  • Winter – Ambiorix revolts in Gaul. He joins with Catuvolcus in an uprising against the Roman army. Caesar's senior officers Lucius Aurunculeius Cotta and Quintus Titurius Sabinus are ambushed by the Eburones, and killed along with almost their entire forces.
• Pompey builds the first permanent theatre in Rome.
• Crassus arrives in Syria as proconsul and invades the Parthian Empire, initiating the Roman–Persian Wars, which were to last nearly seven centuries.
• Octavia the Younger and Gaius Claudius Marcellus marry.
• The beginning of the breakup of the First Triumvirate with the death of Caesar's daughter Julia.

Births

• Gnaeus Cornelius Lentulus, Roman consul (d. AD 25)
• Seneca the Elder, Roman rhetorician and writer
• Tibullus, Roman poet and writer (d. 19 BC)

Deaths

• July 31 – Aurelia Cotta, mother of Julius Caesar (b. 120 BC)
• Ariovistus, leader of the Suebi (approximated date)
• Gaius Valerius Catullus, Roman poet and writer (b. 84 BC)
• Huo Chengjun, empress of the Han Dynasty
• Julia, daughter of Julius Caesar (dies in childbirth)
• Lucius Aurunculeius Cotta, Roman legate of Julius Caesar
• Lucius Gellius Publicola, Roman politician (approximate date)
• Lucius Valerius Flaccus, Roman tribune and praetor
• Mithridates III, king of Parthia (executed by Orodes II)
• Quintus Laberius Durus, Roman tribune of Julius Caesar
• Quintus Titurius Sabinus, Roman legate of Julius Caesar