Bruce Duncan MacDonald (October 22, 1927 – March 30, 2020) was an American racewalker. He competed at the 1956, 1960 and the 1964 Summer Olympics. He competed in his first Olympics at the age of 29. He worked four additional Olympics, two in the capacity of team manager and two more as an official. Before his success as a race walker, he finished sixth in the 60 yard hurdles at the 1946 indoor national championships while competing for Bayside High School.