mistress of Julius Caesar (Caesar, Julius), mother to his murderer Marcus Brutus (Brutus, Marcus Junius), and one of the grandes dames of Rome's late republican period.

Servilia was the daughter of Quintus Servilius Caepio and Livia. Servilia was first wed to Marcus Junius Brutus, by whom she bore the younger Brutus in 85 BC. She was then married to Decius Junius Silanus (consul in 62 BC) from 77 to 61 BC, by whom she had three daughters.

She was Caesar's favourite mistress for a period of 20 years. He appears to have been captivated more by her cleverness than by her physical beauty. It was rumoured that her son Brutus was actually by Caesar, but this is unlikely as the two men were born only 15 years apart. The irony of her relation to Caesar is compounded in that Tertia, a daughter by her first marriage, was the wife of Cassius, another of the principal conspirators against Caesar.

Caesar gave Servilia several estates confiscated following the civil wars. She survived to see not only Caesar's death but also that of Brutus, whose ashes Antony sent her after Brutus committed suicide following the Battle of Philippi (42 BC).