The mixed pairs BC4 boccia event at the 2020 Summer Paralympics was contested between 2 and 4 September 2021 at the Ariake Gymnastics Centre. Since this event is a mixed event, both genders, male and female, competed in the event. The competition started off with a pools stage, containing 2 pools with 5 teams each, and was followed by the semifinals where the winners moved to the finals to fight for gold and the losers went to the bronze medal match to fight for bronze.