75 BC

75 BC in various calendars
Gregorian calendar	75 BC; LXXV BC
Ab urbe condita	679
Ancient Egypt era	XXXIII dynasty, 249
- Pharaoh	Ptolemy XII Auletes, 6
Ancient Greek era	176th Olympiad, year 2
Assyrian calendar	4676
Balinese saka calendar	N/A
Bengali calendar	−668 – −667
Berber calendar	876
Buddhist calendar	470
Burmese calendar	−712
Byzantine calendar	5434–5435
Chinese calendar	乙巳年 (Wood Snake); 2623 or 2416; — to —; 丙午年 (Fire Horse); 2624 or 2417
Coptic calendar	−358 – −357
Discordian calendar	1092
Ethiopian calendar	−82 – −81
Hebrew calendar	3686–3687
Hindu calendars
- Vikram Samvat	−18 – −17
- Shaka Samvat	N/A
- Kali Yuga	3026–3027
Holocene calendar	9926
Iranian calendar	696 BP – 695 BP
Islamic calendar	717 BH – 716 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2259
Minguo calendar	1986 before ROC; 民前1986年
Nanakshahi calendar	−1542
Seleucid era	237/238 AG
Thai solar calendar	468–469
Tibetan calendar	阴木蛇年; (female Wood-Snake); 52 or −329 or −1101; — to —; 阳火马年; (male Fire-Horse); 53 or −328 or −1100

250 BC in various calendars
Gregorian calendar	250 BC; CCL BC
Ab urbe condita	504
Ancient Egypt era	XXXIII dynasty, 74
- Pharaoh	Ptolemy II Philadelphus, 34
Ancient Greek era	132nd Olympiad, year 3
Assyrian calendar	4501
Balinese saka calendar	N/A
Bengali calendar	−843 – −842
Berber calendar	701
Buddhist calendar	295
Burmese calendar	−887
Byzantine calendar	5259–5260
Chinese calendar	庚戌年 (Metal Dog); 2448 or 2241; — to —; 辛亥年 (Metal Pig); 2449 or 2242
Coptic calendar	−533 – −532
Discordian calendar	917
Ethiopian calendar	−257 – −256
Hebrew calendar	3511–3512
Hindu calendars
- Vikram Samvat	−193 – −192
- Shaka Samvat	N/A
- Kali Yuga	2851–2852
Holocene calendar	9751
Iranian calendar	871 BP – 870 BP
Islamic calendar	898 BH – 897 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2084
Minguo calendar	2161 before ROC; 民前2161年
Nanakshahi calendar	−1717
Seleucid era	62/63 AG
Thai solar calendar	293–294
Tibetan calendar	阳金狗年; (male Iron-Dog); −123 or −504 or −1276; — to —; 阴金猪年; (female Iron-Pig); −122 or −503 or −1275

Year 75 BC was a year of the pre-Julian calendar.

Events

In Rome, the tribune Quintus Opimius speaks out against Sullan restrictions on the tribunate, in orations noted for sarcasm against conservatives.
Cicero is quaestor in Rome.
Nicomedes IV of Bithynia bequeathed his kingdom to Rome on his death (75/4 BC), angry by the arrangement, Mithridates VI of Pontus declared war on Rome and invaded Bithynia, Cappadocia and Paphlagonia, thus starting the Third Mithridatic War.
Third Mithridatic War — M. Aurelius Cotta was defeated by Mithridates in the Battle of Chalcedon.