J. Oliver Macdonald (February 20, 1904 in Paterson, New Jersey - April 14, 1973 in Flemington, New Jersey) was an American athlete, winner of gold medal in 4 × 400 m relay at the 1924 Summer Olympics.

[1] At the Paris Olympics, John Oliver Macdonald ran the third leg in the American 4 × 400 m relay team, which won the gold medal with a new world record of 3.16.0.

He owned purebred Beagles and use to run his dogs in sanctioned field trials.

He retired in 1960 and moved to Flemington, NJ and sold real estate.

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