|Millennium:||1st millennium BC|
|72 BC by topic|
Year 72 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Publicola and Lentulus (or, less frequently, year 682 Ab urbe condita). The denomination 72 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.
- Battle of Cabira: Lucius Lucullus defeats Mithridates VI of Pontus, overruns Pontus. Mithridates fled to Armenia, rules by his son-in-law Tigranes, who refuses to turn his father-in-law in to Lucius Lucullus.
- Quintus Sertorius was assassinated by his subordinate, Marcus Perperna, who was in turn defeated by Gnaeus Pompeius, thus ending the Sertorian War in Spain.