The Women's 70 kg (also known as middleweight) tournament in the judo at the 2008 Summer Olympics was held on August 13 at the Beijing Science and Technology University Gymnasium.

This event was the third-heaviest of the women's judo weight classes, limiting competitors to a maximum of 70 kilograms of body mass.

The tournament bracket consisted of a single-elimination contest culminating in a gold medal match.

The two judokas who lost in the semifinals faced the winner of the opposite half of the bracket's repechage in bronze medal bouts.

Bronze medal winner Ronda Rousey, would later began a successful career in mixed martial arts where she would be the UFC's first female champion at bantamweight.