Stoch was in good shape at the beginning of the 2018 Winter Olympic Games and had a good jumps at training sessions and qualifications. At normal hill event he took 4th place. On 17 February 2018 he won a gold medal ahead of Andreas Wellinger and Robert Johansson at large hill. It was his third title of the Olympic Champion. On 19 February 2018 Stoch and his teammates Maciej Kot, Stefan Hula and Dawid Kubacki achieved first medal in Olympic team competition for Poland. They claimed a bronze behind Norway and Germany.