Irene Margaret MacDonald, OBC (November 22, 1931 – June 20, 2002) was a Canadian athlete, sports executive and broadcaster from Hamilton, Ontario.

[1] She won Canada's first-ever Olympic diving medal, a bronze, at the 1956 Summer Games.

[3] MacDonald was selected for the 1952 Summer Olympics, but due to the lack of funding she was unable to attend.

[4] Four years later she competed in Melbourne, at the 1956 Summer Olympics, in the 3 metre springboard, MacDonald finished the preliminary round of six dives in second place and so advanced to the final, in the final she did another four dives and finished in fifth but with all the scores combined she won the bronze medal.

[3] She won a bronze medal in 3 Metres Springboard Diving at the 1954 British Empire and Commonwealth Games and a silver medal at the 1958 British Empire and Commonwealth Games.