William Marquart

William "Billy" Marquart (February 24, 1915 – June 13, 1960) was a Canadian boxer who competed in the 1936 Summer Olympics.

He was born in Winnipeg and died in Chicago.

In 1936 he was eliminated in the quarterfinals of the featherweight class after losing his fight to Dezső Frigyes.

Embarking on a professional career after the Olympics, he eventually moved to the United States permanently and joined the country’s Navy in June of 1942, the same month in which he TKOed Cleo McNeal in his final professional fight.