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Millennium:	1st millennium BC
Centuries:	3rd century BC 2nd century BC 1st century BC
Decades:	120s BC 110s BC 100s BC 90s BC 80s BC
Years:	104 BC 103 BC 102 BC 101 BC 100 BC 99 BC 98 BC

Politics
101 BC by topic
State leaders Political entities
Categories
Deaths
v t e

101 BC in various calendars
Gregorian calendar	101 BC CI BC
Ab urbe condita	653
Ancient Egypt era	XXXIII dynasty, 223
- Pharaoh	Ptolemy X Alexander, 7
Ancient Greek era	169th Olympiad, year 4
Assyrian calendar	4650
Balinese saka calendar	N/A
Bengali calendar	−693
Berber calendar	850
Buddhist calendar	444
Burmese calendar	−738
Byzantine calendar	5408–5409
Chinese calendar	己卯年 (Earth Rabbit) 2597 or 2390 — to — 庚辰年 (Metal Dragon) 2598 or 2391
Coptic calendar	−384 – −383
Discordian calendar	1066
Ethiopian calendar	−108 – −107
Hebrew calendar	3660–3661
Hindu calendars
- Vikram Samvat	−44 – −43
- Shaka Samvat	N/A
- Kali Yuga	3000–3001
Holocene calendar	9900
Iranian calendar	722 BP – 721 BP
Islamic calendar	744 BH – 743 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2233
Minguo calendar	2012 before ROC 民前2012年
Nanakshahi calendar	−1568
Seleucid era	211/212 AG
Thai solar calendar	442–443
Tibetan calendar	阴土兔年 (female Earth-Rabbit) 26 or −355 or −1127 — to — 阳金龙年 (male Iron-Dragon) 27 or −354 or −1126

Year 101 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Marius and Aquillius (or, less frequently, year 653 Ab urbe condita) and the Fourth Year of Taichu. The denomination 101 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

July 30 – Battle of Vercellae (Battle of the Raudine Plain or Battle of Campi Raudii): The Roman consuls Gaius Marius and Manius Aquillius defeat the Cimbri.

Libya

Ptolemy Apion inherits the kingdom of Cyrenaica.

Asia

War of the Heavenly Horses: Han general Li Guangli detaches forces to attack Yucheng. After a failed attack by Wang Shengshen and Hu Chongguo, in which Wang is killed, a new Han detachment under Shangguan Jie defeats and captures the king of Yucheng. The king is then killed by the soldiers escorting him to Li Guangli.^[1]
Han-Xiongnu War: At the beginning of the year, Xulihu Chanyu dies from illness and is succeeded by Qiedihou Chanyu. Qiedihou releases the Han envoys detained by the Xiongnu and receives gifts from Emperor Wu of Han.^[2]

Deaths

Boiorix, king of the Cimbri (killed at the Battle of Vercellae)
Cleopatra III, queen of the Ptolemaic Kingdom (assassinated by her son Ptolemy X Alexander I)