|Millennium:||1st millennium BC|
|74 BC by topic|
|Gregorian calendar||74 BC|
|Ab urbe condita||680|
|Ancient Egypt era||XXXIII dynasty, 250|
|- Pharaoh||Ptolemy XII Auletes, 7|
|Ancient Greek era||176th Olympiad, year 3|
|Balinese saka calendar||N/A|
|Chinese calendar||丙午年 (Fire Horse)|
2623 or 2563
— to —
丁未年 (Fire Goat)
2624 or 2564
|Coptic calendar||−357 – −356|
|Ethiopian calendar||−81 – −80|
|- Vikram Samvat||−17 – −16|
|- Shaka Samvat||N/A|
|- Kali Yuga||3027–3028|
|Iranian calendar||695 BP – 694 BP|
|Islamic calendar||716 BH – 715 BH|
|Minguo calendar||1985 before ROC|
|Seleucid era||238/239 AG|
|Thai solar calendar||469–470|
53 or −328 or −1100
— to —
54 or −327 or −1099
Year 74 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Lucullus and Cotta (or, less frequently, year 680 Ab urbe condita). The denomination 74 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.
- Nicomedes IV, last king of Bithynia bequeaths his kingdom to the Roman Senate upon his death (75/4 BC).
- Roman forces under Lucius Lucullus defeat the forces of Mithridates VI of Pontus in the Battle of Cyzicus.
- Marcus Antonius (father of Mark Antony), a praetor, receives wide-ranging powers and considerable resources to fight the pirates in the Mediterranean Sea.
- Publius Servilius Vatia returns to Rome, where he has triumphed against the pirates in Anatolia, and is given the agnomen Isauricus.
- Quintus Opimius is prosecuted for overstepping his authority, and ruined by a conviction.
- Cyrene becomes a Roman province.
- Pamplona is founded.
- Quintus Aelius Tubero, Roman jurist and statesman
- Lucius Aelius Stilo Praeconinus, Roman philologist
- Lucius Octavius, Roman politician and consul
- Nicomedes IV (Philopator), king of Bithynia
- Zhao of Han, Chinese emperor (b. 94 BC)