75 BC

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.