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Margarette Ballard (December 20, 1866 – unknown) was an American tennis player from the end of the 19th century.

In 1889, she won the first women's doubles at the U.S. Women's National Championship with Bertha Townsend.^[1]

Outcome	Year	Championship	Surface	Partner	Opponents	Score
Winner	1889	U.S. Championships	Grass	Bertha Townsend	Marion Wright Laura Knight	6–2, 6–0
Runner-up	1890	U.S. Championships	Grass	Bertha Townsend	Grace Roosevelt Ellen Roosevelt	1–6, 2–6