Margaret Sumner (née Terrington; 7 July 1941 – 16 October 2022) was an international lawn bowls competitor for Australia.

[4] In 1996, she won the gold medal in the fours and silver medal in the triples at the 1996 World Outdoor Bowls Championship in Adelaide.

Two years later she won a bronze medal at the 1998 Commonwealth Games in the pairs.

[5] Sumner won four medals at the Asia Pacific Bowls Championships including double gold medal in the 1997 triples and fours at Warilla, Australia.

[7] Sumner died in Warrnambool on 16 October 2022, at the age of 81.