Bruce William Biddle (born 2 November 1948 in Warkworth) is a former road racing cyclist from New Zealand, who was a professional rider from 1974 to 1979. He won the gold medal in the men's individual road race at the 1970 Commonwealth Games in Edinburgh, Scotland.

He represented his native country at the 1972 Summer Olympics in Munich, West Germany, where he came fourth in the men's individual road race. Although Jaime Huelamo from Spain, who came third, was disqualified for failing a drug test, the bronze medal was not awarded to Biddle as he had not been tested for drugs.