Mary McCormic (November 11, 1889[2] – February 10, 1981) was an American operatic soprano and a professor of opera at the University of North Texas College of Music (1945–1960).

A onetime obscure Arkansas housewife, McCormic rose to stardom and enjoyed a colorful personal life — four marriages and four divorces (men of no resemblance to one another), almost a fifth, a high-dollar lawsuit defense for assaulting an unauthorized female biographer, boom and bust personal wealth, witty humor, and brush with royalty.

McCormic captured world intrigue with the panache of the operas she starred, all with the backdrop of being born at the end of the Gilded Age; growing up as a teenager during World War I; flourishing as an opera superstar through the Roaring Twenties, Prohibition, the Jazz Age, and the Great Crash; and failing in her last two high-profile marriages in the throes of the Great Depression.

In 1924, McCormic, early in her career, gained the artist management services of Charles L. Wagner (1869–1956), who also managed world figures that included Mary Garden, Amelita Galli-Curci, Walter Gieseking, Jussi Björling, Alexander Kipnis, and Jeanette MacDonald.

During a 1914 Tri-State Fair Music Festival in Amarillo, McCormic became aware of the operatic possibilities of her voice.

Both McCormic and Garden had been vocal students of the renowned voice teacher Mrs. Sarah Robinson-Duff (née Robinson; 1858–1934)[19] In 1944, Wilfred Bain, dean of the University of North Texas College of Music, recruited Mary McCormic to create and direct an Opera Workshop.

Under McCormic, the opera workshop performed locally, toured, and did broadcasts in radio and TV often with near quality of a reputable professional company.

In 1966, McCormic retired and moved to Amarillo to make her home with her widowed sister-in-law, Mrs. Odell Harris.