Hugh John Plaxton (May 16, 1904 – December 1, 1982) was a Canadian ice hockey player and politician.
In his political career, he served in the House of Commons of Canada from 1935 to 1940, representing Trinity as a member of the Liberal Party.
In 1928 he was a member of the University of Toronto Grads, the Canadian team which won the gold medal with his brother Herbert and cousin Roger.
He lost the Liberal Party nomination in 1940 federal election to former Ontario Attorney-General Arthur Roebuck but attempted to return to Parliament in the 1945 federal election running in the riding of Kingston City where he was defeated by Conservative Thomas Kidd.
In January 1937, Plaxton introduced a resolution in the House of Commons of Canada to propose establishment of a Canadian ministry for sport.