harold thompson mann (december 1, 1942 – april 4, 2019) was an american swimmer. he competed at the 1964 summer olympics in tokyo. at that olympic games, he won a gold medal for swimming the lead-off backstroke leg for the winning u.s. team in the 4 x 100-meter medley relay. he and his relay teammates bill craig (breaststroke), fred schmidt (butterfly) and steve clark set a new world record of 3:58.4. mann also set an individual world record in the 100-meter backstroke swimming his leg (59.6 seconds). he was born in norfolk, virginia.