Myrtle McAteer (June 12, 1878 – October 26, 1952) was an American tennis player around the turn of the 20th century.

She won the 1899 U.S. National Championships in women's doubles tennis, alongside her teammate Dr. Jane Craven.

[1] McAteer was also the first singles champion of the storied event in Cincinnati.

She knocked out future International Tennis Hall of Famer Juliette Atkinson in the singles final in 1899 to take the title.

At the U.S. Clay Court Championships in 1915, she was a singles quarterfinalist and a mixed doubles semifinalist.