The verdict followed a two-week trial in Santa Monica, where jurors ruled in favour of Donna Motsinger.
She was awarded over 19 million dollars in compensatory damages for emotional distress, suffering, and loss of enjoyment of life.
In a second phase of the trial, the jury added 40 million dollars in punitive damages, bringing the total to 59.25 million dollars.
Cosby’s legal team says they are disappointed with the decision and plan to appeal the ruling.
The verdict comes nearly five years after Cosby was released from prison, when the Pennsylvania Supreme Court overturned his earlier criminal conviction.
He has faced multiple civil cases over similar allegations, settling some and losing others, but this marks one of the largest financial judgments against him to date.
