Peaty only competed in the 100 metre breaststroke in the individual events as 50 metre breaststroke was not an Olympic swimming event at the 2016 Summer Olympics in Rio de Janeiro. In the heats, Peaty broke his own world record with a time of 57.55 seconds. He then won his semi-final and went on to win the final, breaking the new world record that he himself had set in the heats, and winning Team GB's first gold medal of the 2016 Olympics on 7 August 2016, winning with a time of 57.13 seconds. He won a further silver medal in the 4 × 100 metre medley relay with Walker-Hebborn, Guy and Scott.